# Tier Groups

## Get customer tier groups

> Retrieves tier group state for a logged in customer. Returns an empty array if not logged in.

```json
{"openapi":"3.1.1","info":{"title":"PayNow Storefront (Headless) API","version":"v1"},"tags":[{"name":"tier-groups"}],"security":[{},{"Customer":[]}],"components":{"securitySchemes":{"Customer":{"type":"apiKey","description":"A Customer token generated using an API Key in the format 'Customer TOKEN_HERE'.","name":"Authorization","in":"header"}},"schemas":{"CustomerTierGroupDto":{"required":["active_product_id","currency","next_billing_amount","next_billing_presentment_amount","next_renewal_at","presentment_currency","tier_group_id"],"type":"object","properties":{"tier_group_id":{"$ref":"#/components/schemas/FlakeId"},"active_product_id":{"$ref":"#/components/schemas/FlakeId"},"pending_change_product_id":{"$ref":"#/components/schemas/FlakeId"},"next_renewal_at":{"type":"string","description":"The date and time of the next subscription renewal for this tier group.","format":"date-time"},"next_billing_amount":{"type":"integer","description":"The next billing amount in the smallest currency unit (e.g., cents) in the settlement currency.","format":"int64"},"next_billing_presentment_amount":{"type":"integer","description":"The next billing amount in the smallest currency unit (e.g., cents) in the customer-facing presentment currency.","format":"int64"},"currency":{"type":"string","description":"The settlement currency code (e.g., \"usd\")."},"presentment_currency":{"type":"string","description":"The customer-facing presentment currency code (e.g., \"eur\")."}},"additionalProperties":false},"FlakeId":{"type":"string","additionalProperties":false,"format":"flake-id"},"PayNowError":{"required":["code","message","status"],"type":"object","properties":{"status":{"type":"integer","description":"The HTTP status code.","format":"int32"},"code":{"type":"string","description":"The PayNow parseable error code."},"message":{"type":"string","description":"The human-readable error message."},"trace_id":{"type":["null","string"],"description":"A distributed trace ID used for debugging."},"errors":{"type":["null","array"],"items":{"$ref":"#/components/schemas/ValidationError"},"description":"An array of multiple errors. Only used by some API services."}},"additionalProperties":false,"description":"Represents a PayNow error"},"ValidationError":{"required":["code","message","path","validation"],"type":"object","properties":{"code":{"type":"string","description":"The parseable error code."},"message":{"type":"string","description":"The human-readable error message."},"path":{"type":"string","description":"The path leading to the validation error."},"validation":{"type":"string","description":"Type of the validation that failed."}},"additionalProperties":false,"description":"A validation error."}}},"paths":{"/v1/store/tier-groups":{"get":{"tags":["tier-groups"],"summary":"Get customer tier groups","description":"Retrieves tier group state for a logged in customer. Returns an empty array if not logged in.","operationId":"StorefrontTierGroups_GetCustomerTierGroups","responses":{"200":{"description":"OK","content":{"application/json":{"schema":{"type":"array","items":{"$ref":"#/components/schemas/CustomerTierGroupDto"}}}}},"default":{"description":"Error response","content":{"application/json":{"schema":{"$ref":"#/components/schemas/PayNowError"}}}}}}}}}
```

## Update subscription tier group

> Upgrades or downgrades an existing subscription tier group. The customer must have an active subscription within this tier group.

```json
{"openapi":"3.1.1","info":{"title":"PayNow Storefront (Headless) API","version":"v1"},"tags":[{"name":"tier-groups"}],"security":[{"Customer":[]}],"components":{"securitySchemes":{"Customer":{"type":"apiKey","description":"A Customer token generated using an API Key in the format 'Customer TOKEN_HERE'.","name":"Authorization","in":"header"}},"schemas":{"FlakeId":{"type":"string","additionalProperties":false,"format":"flake-id"},"UpdateSubscriptionTierRequestDto":{"required":["target_product_id"],"type":"object","properties":{"target_product_id":{"$ref":"#/components/schemas/FlakeId"},"verification_code":{"type":["null","string"],"description":"A verification code sent to the customer's subscription billing e-mail.\nPass this if the `status` field on the `subscription_change` object equals `pending_verification`."}},"additionalProperties":false},"UpdateSubscriptionResponseDto":{"required":["subscription_change"],"type":"object","properties":{"subscription_change":{"$ref":"#/components/schemas/SubscriptionChangeDto"},"pending_payment":{"$ref":"#/components/schemas/CheckoutPaymentInfoDto"}},"additionalProperties":false,"description":"Response returned after a subscription change is initiated."},"SubscriptionChangeDto":{"required":["created_at","id","lines","next_billing_amount","next_billing_presentment_amount","off_session","prorated_amount","proration_behavior","status","subscription_id"],"type":"object","properties":{"id":{"$ref":"#/components/schemas/FlakeId"},"subscription_id":{"$ref":"#/components/schemas/FlakeId"},"prorated_order_id":{"$ref":"#/components/schemas/FlakeId"},"status":{"$ref":"#/components/schemas/SubscriptionChangeStatusDto"},"proration_behavior":{"$ref":"#/components/schemas/ProrationBehaviorDto"},"off_session":{"type":"boolean","description":"Whether this change was initiated without active customer interaction."},"prorated_amount":{"$ref":"#/components/schemas/SubscriptionChangeProratedAmountDto"},"created_at":{"type":"string","format":"date-time"},"applied_at":{"type":["null","string"],"format":"date-time"},"lines":{"type":"array","items":{"$ref":"#/components/schemas/SubscriptionChangeLineDto"}},"next_billing_amount":{"$ref":"#/components/schemas/SubscriptionChangeAmountDto"},"next_billing_presentment_amount":{"$ref":"#/components/schemas/SubscriptionChangeAmountDto"}},"additionalProperties":false,"description":"A pending or applied change to a subscription."},"SubscriptionChangeStatusDto":{"enum":["invalid","pending_payment","pending_renewal","applied","canceled","pending_verification"],"type":"string","description":"Represents the status of a subscription change."},"ProrationBehaviorDto":{"enum":["invalid","immediate","next_billing_period","none"],"type":"string","description":"Describes how proration is handled when a subscription change is applied."},"SubscriptionChangeProratedAmountDto":{"required":["currency","presentment_currency","presentment_prorated_amount","prorated_amount"],"type":"object","properties":{"currency":{"type":"string","description":"ISO 4217 settlement currency code, in lowercase."},"prorated_amount":{"type":"integer","description":"Total prorated charge in smallest settlement currency units, including tax.","format":"int64"},"presentment_currency":{"type":"string","description":"ISO 4217 presentment currency code, in lowercase."},"presentment_prorated_amount":{"type":"integer","description":"Total prorated charge in smallest presentment currency units, including tax.","format":"int64"}},"additionalProperties":false,"description":"The total prorated charge for a subscription change, expressed in both settlement and presentment currencies."},"SubscriptionChangeLineDto":{"required":["amount","id","is_deleted","presentment_amount","price","product","prorated_amount","prorated_presentment_amount","remaining_minutes","tax_inclusive","total_minutes"],"type":"object","properties":{"id":{"$ref":"#/components/schemas/FlakeId"},"subscription_line_id":{"$ref":"#/components/schemas/FlakeId"},"is_deleted":{"type":"boolean","description":"Whether this line is being removed by the change."},"tax_inclusive":{"type":"boolean","description":"Whether tax is included in the base price."},"price":{"type":"integer","description":"Base price in smallest settlement currency units.","format":"int64"},"product":{"$ref":"#/components/schemas/SubscriptionChangeLineProductDto"},"amount":{"$ref":"#/components/schemas/SubscriptionChangeLineAmountDto"},"presentment_amount":{"$ref":"#/components/schemas/SubscriptionChangeLineAmountDto"},"prorated_amount":{"type":"integer","description":"Prorated charge for this line in smallest settlement currency units.","format":"int64"},"prorated_presentment_amount":{"type":"integer","description":"Prorated charge for this line in smallest presentment currency units.","format":"int64"},"remaining_minutes":{"type":"integer","description":"Minutes remaining in the billing period at the time of change - used to calculate proration.","format":"int64"},"total_minutes":{"type":"integer","description":"Total minutes in the billing period - used to calculate proration.","format":"int64"}},"additionalProperties":false,"description":"A single line item within a subscription change."},"SubscriptionChangeLineProductDto":{"required":["custom_variables","id","name","version_id"],"type":"object","properties":{"id":{"$ref":"#/components/schemas/FlakeId"},"version_id":{"$ref":"#/components/schemas/FlakeId"},"name":{"type":"string","description":"Display name of the product."},"image_url":{"type":["null","string"],"description":"URL of the product image, if set."},"selected_gameserver_id":{"$ref":"#/components/schemas/FlakeId"},"pricing_region_id":{"type":["null","string"],"description":"The pricing region used to determine the price, if applicable."},"custom_variables":{"type":"object","additionalProperties":{"$ref":"#/components/schemas/CustomVariableLineItemDto"},"description":"Custom variables set on this line item, keyed by variable identifier."}},"additionalProperties":false,"description":"The product associated with a subscription change line."},"CustomVariableLineItemDto":{"required":["description","id","identifier","name","price","value"],"type":"object","properties":{"id":{"$ref":"#/components/schemas/FlakeId"},"identifier":{"type":"string","description":"The identifier used to reference this custom variable (e.g., \"color\", \"size\")."},"name":{"type":"string","description":"The display name of the custom variable shown to users."},"description":{"type":"string","description":"A detailed description of what this custom variable represents."},"price":{"type":"integer","description":"The price associated with this custom variable in the smallest currency unit (e.g., cents).","format":"int64"},"value":{"type":"string","description":"The selected value for this custom variable."}},"additionalProperties":false},"SubscriptionChangeLineAmountDto":{"required":["currency","discount","subtotal","tax","total"],"type":"object","properties":{"currency":{"type":"string","description":"ISO 4217 currency code in lowercase."},"subtotal":{"type":"integer","description":"Base amount before discounts or tax, in smallest currency units.","format":"int64"},"discount":{"type":"integer","description":"Total discount applied, in smallest currency units.","format":"int64"},"tax":{"type":"integer","description":"Tax amount, in smallest currency units.","format":"int64"},"total":{"type":"integer","description":"Amount due after discounts and tax, in smallest currency units.","format":"int64"}},"additionalProperties":false,"description":"Pricing breakdown for a single subscription change line, in the smallest units of the given currency (e.g. cents)."},"SubscriptionChangeAmountDto":{"required":["currency","discount","subtotal","tax","total"],"type":"object","properties":{"currency":{"type":"string","description":"ISO 4217 currency code, in lowercase."},"subtotal":{"type":"integer","description":"Base amount before discounts or tax, in smallest currency units.","format":"int64"},"discount":{"type":"integer","description":"Total discount applied, in smallest currency units.","format":"int64"},"tax":{"type":"integer","description":"Tax amount, in smallest currency units.","format":"int64"},"total":{"type":"integer","description":"Amount due after discounts and tax, in smallest currency units.","format":"int64"}},"additionalProperties":false,"description":"Pricing breakdown for a subscription change, in the smallest units of the given currency (e.g. cents)."},"CheckoutPaymentInfoDto":{"required":["declined","status"],"type":"object","properties":{"status":{"type":"string","description":"Status string from the payment provider."},"declined":{"type":"boolean","description":"Indicates whether the payment was declined."},"decline_message":{"type":["null","string"],"description":"The customer readable decline reason, if the payment was declined."},"checkout_url":{"type":["null","string"],"description":"Checkout URL to redirect to for on-session payments."}},"additionalProperties":false,"description":"Payment outcome information returned after a subscription change triggers an immediate charge."},"PayNowError":{"required":["code","message","status"],"type":"object","properties":{"status":{"type":"integer","description":"The HTTP status code.","format":"int32"},"code":{"type":"string","description":"The PayNow parseable error code."},"message":{"type":"string","description":"The human-readable error message."},"trace_id":{"type":["null","string"],"description":"A distributed trace ID used for debugging."},"errors":{"type":["null","array"],"items":{"$ref":"#/components/schemas/ValidationError"},"description":"An array of multiple errors. Only used by some API services."}},"additionalProperties":false,"description":"Represents a PayNow error"},"ValidationError":{"required":["code","message","path","validation"],"type":"object","properties":{"code":{"type":"string","description":"The parseable error code."},"message":{"type":"string","description":"The human-readable error message."},"path":{"type":"string","description":"The path leading to the validation error."},"validation":{"type":"string","description":"Type of the validation that failed."}},"additionalProperties":false,"description":"A validation error."}}},"paths":{"/v1/store/tier-groups/{id}/change":{"post":{"tags":["tier-groups"],"summary":"Update subscription tier group","description":"Upgrades or downgrades an existing subscription tier group. The customer must have an active subscription within this tier group.","operationId":"StorefrontTierGroups_UpdateSubscriptionTierGroup","parameters":[{"name":"id","in":"path","required":true,"schema":{"$ref":"#/components/schemas/FlakeId"}}],"requestBody":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/UpdateSubscriptionTierRequestDto"}},"text/json":{"schema":{"$ref":"#/components/schemas/UpdateSubscriptionTierRequestDto"}},"application/*+json":{"schema":{"$ref":"#/components/schemas/UpdateSubscriptionTierRequestDto"}}}},"responses":{"200":{"description":"OK","content":{"application/json":{"schema":{"$ref":"#/components/schemas/UpdateSubscriptionResponseDto"}}}},"default":{"description":"Error response","content":{"application/json":{"schema":{"$ref":"#/components/schemas/PayNowError"}}}}}}}}}
```

## Preview update subscription tier group

> Previews an upgrade or a downgrade an existing subscription tier group. The customer must have an active subscription within this tier group.

```json
{"openapi":"3.1.1","info":{"title":"PayNow Storefront (Headless) API","version":"v1"},"tags":[{"name":"tier-groups"}],"security":[{"Customer":[]}],"components":{"securitySchemes":{"Customer":{"type":"apiKey","description":"A Customer token generated using an API Key in the format 'Customer TOKEN_HERE'.","name":"Authorization","in":"header"}},"schemas":{"FlakeId":{"type":"string","additionalProperties":false,"format":"flake-id"},"UpdateSubscriptionTierRequestDto":{"required":["target_product_id"],"type":"object","properties":{"target_product_id":{"$ref":"#/components/schemas/FlakeId"},"verification_code":{"type":["null","string"],"description":"A verification code sent to the customer's subscription billing e-mail.\nPass this if the `status` field on the `subscription_change` object equals `pending_verification`."}},"additionalProperties":false},"UpdateSubscriptionResponseDto":{"required":["subscription_change"],"type":"object","properties":{"subscription_change":{"$ref":"#/components/schemas/SubscriptionChangeDto"},"pending_payment":{"$ref":"#/components/schemas/CheckoutPaymentInfoDto"}},"additionalProperties":false,"description":"Response returned after a subscription change is initiated."},"SubscriptionChangeDto":{"required":["created_at","id","lines","next_billing_amount","next_billing_presentment_amount","off_session","prorated_amount","proration_behavior","status","subscription_id"],"type":"object","properties":{"id":{"$ref":"#/components/schemas/FlakeId"},"subscription_id":{"$ref":"#/components/schemas/FlakeId"},"prorated_order_id":{"$ref":"#/components/schemas/FlakeId"},"status":{"$ref":"#/components/schemas/SubscriptionChangeStatusDto"},"proration_behavior":{"$ref":"#/components/schemas/ProrationBehaviorDto"},"off_session":{"type":"boolean","description":"Whether this change was initiated without active customer interaction."},"prorated_amount":{"$ref":"#/components/schemas/SubscriptionChangeProratedAmountDto"},"created_at":{"type":"string","format":"date-time"},"applied_at":{"type":["null","string"],"format":"date-time"},"lines":{"type":"array","items":{"$ref":"#/components/schemas/SubscriptionChangeLineDto"}},"next_billing_amount":{"$ref":"#/components/schemas/SubscriptionChangeAmountDto"},"next_billing_presentment_amount":{"$ref":"#/components/schemas/SubscriptionChangeAmountDto"}},"additionalProperties":false,"description":"A pending or applied change to a subscription."},"SubscriptionChangeStatusDto":{"enum":["invalid","pending_payment","pending_renewal","applied","canceled","pending_verification"],"type":"string","description":"Represents the status of a subscription change."},"ProrationBehaviorDto":{"enum":["invalid","immediate","next_billing_period","none"],"type":"string","description":"Describes how proration is handled when a subscription change is applied."},"SubscriptionChangeProratedAmountDto":{"required":["currency","presentment_currency","presentment_prorated_amount","prorated_amount"],"type":"object","properties":{"currency":{"type":"string","description":"ISO 4217 settlement currency code, in lowercase."},"prorated_amount":{"type":"integer","description":"Total prorated charge in smallest settlement currency units, including tax.","format":"int64"},"presentment_currency":{"type":"string","description":"ISO 4217 presentment currency code, in lowercase."},"presentment_prorated_amount":{"type":"integer","description":"Total prorated charge in smallest presentment currency units, including tax.","format":"int64"}},"additionalProperties":false,"description":"The total prorated charge for a subscription change, expressed in both settlement and presentment currencies."},"SubscriptionChangeLineDto":{"required":["amount","id","is_deleted","presentment_amount","price","product","prorated_amount","prorated_presentment_amount","remaining_minutes","tax_inclusive","total_minutes"],"type":"object","properties":{"id":{"$ref":"#/components/schemas/FlakeId"},"subscription_line_id":{"$ref":"#/components/schemas/FlakeId"},"is_deleted":{"type":"boolean","description":"Whether this line is being removed by the change."},"tax_inclusive":{"type":"boolean","description":"Whether tax is included in the base price."},"price":{"type":"integer","description":"Base price in smallest settlement currency units.","format":"int64"},"product":{"$ref":"#/components/schemas/SubscriptionChangeLineProductDto"},"amount":{"$ref":"#/components/schemas/SubscriptionChangeLineAmountDto"},"presentment_amount":{"$ref":"#/components/schemas/SubscriptionChangeLineAmountDto"},"prorated_amount":{"type":"integer","description":"Prorated charge for this line in smallest settlement currency units.","format":"int64"},"prorated_presentment_amount":{"type":"integer","description":"Prorated charge for this line in smallest presentment currency units.","format":"int64"},"remaining_minutes":{"type":"integer","description":"Minutes remaining in the billing period at the time of change - used to calculate proration.","format":"int64"},"total_minutes":{"type":"integer","description":"Total minutes in the billing period - used to calculate proration.","format":"int64"}},"additionalProperties":false,"description":"A single line item within a subscription change."},"SubscriptionChangeLineProductDto":{"required":["custom_variables","id","name","version_id"],"type":"object","properties":{"id":{"$ref":"#/components/schemas/FlakeId"},"version_id":{"$ref":"#/components/schemas/FlakeId"},"name":{"type":"string","description":"Display name of the product."},"image_url":{"type":["null","string"],"description":"URL of the product image, if set."},"selected_gameserver_id":{"$ref":"#/components/schemas/FlakeId"},"pricing_region_id":{"type":["null","string"],"description":"The pricing region used to determine the price, if applicable."},"custom_variables":{"type":"object","additionalProperties":{"$ref":"#/components/schemas/CustomVariableLineItemDto"},"description":"Custom variables set on this line item, keyed by variable identifier."}},"additionalProperties":false,"description":"The product associated with a subscription change line."},"CustomVariableLineItemDto":{"required":["description","id","identifier","name","price","value"],"type":"object","properties":{"id":{"$ref":"#/components/schemas/FlakeId"},"identifier":{"type":"string","description":"The identifier used to reference this custom variable (e.g., \"color\", \"size\")."},"name":{"type":"string","description":"The display name of the custom variable shown to users."},"description":{"type":"string","description":"A detailed description of what this custom variable represents."},"price":{"type":"integer","description":"The price associated with this custom variable in the smallest currency unit (e.g., cents).","format":"int64"},"value":{"type":"string","description":"The selected value for this custom variable."}},"additionalProperties":false},"SubscriptionChangeLineAmountDto":{"required":["currency","discount","subtotal","tax","total"],"type":"object","properties":{"currency":{"type":"string","description":"ISO 4217 currency code in lowercase."},"subtotal":{"type":"integer","description":"Base amount before discounts or tax, in smallest currency units.","format":"int64"},"discount":{"type":"integer","description":"Total discount applied, in smallest currency units.","format":"int64"},"tax":{"type":"integer","description":"Tax amount, in smallest currency units.","format":"int64"},"total":{"type":"integer","description":"Amount due after discounts and tax, in smallest currency units.","format":"int64"}},"additionalProperties":false,"description":"Pricing breakdown for a single subscription change line, in the smallest units of the given currency (e.g. cents)."},"SubscriptionChangeAmountDto":{"required":["currency","discount","subtotal","tax","total"],"type":"object","properties":{"currency":{"type":"string","description":"ISO 4217 currency code, in lowercase."},"subtotal":{"type":"integer","description":"Base amount before discounts or tax, in smallest currency units.","format":"int64"},"discount":{"type":"integer","description":"Total discount applied, in smallest currency units.","format":"int64"},"tax":{"type":"integer","description":"Tax amount, in smallest currency units.","format":"int64"},"total":{"type":"integer","description":"Amount due after discounts and tax, in smallest currency units.","format":"int64"}},"additionalProperties":false,"description":"Pricing breakdown for a subscription change, in the smallest units of the given currency (e.g. cents)."},"CheckoutPaymentInfoDto":{"required":["declined","status"],"type":"object","properties":{"status":{"type":"string","description":"Status string from the payment provider."},"declined":{"type":"boolean","description":"Indicates whether the payment was declined."},"decline_message":{"type":["null","string"],"description":"The customer readable decline reason, if the payment was declined."},"checkout_url":{"type":["null","string"],"description":"Checkout URL to redirect to for on-session payments."}},"additionalProperties":false,"description":"Payment outcome information returned after a subscription change triggers an immediate charge."},"PayNowError":{"required":["code","message","status"],"type":"object","properties":{"status":{"type":"integer","description":"The HTTP status code.","format":"int32"},"code":{"type":"string","description":"The PayNow parseable error code."},"message":{"type":"string","description":"The human-readable error message."},"trace_id":{"type":["null","string"],"description":"A distributed trace ID used for debugging."},"errors":{"type":["null","array"],"items":{"$ref":"#/components/schemas/ValidationError"},"description":"An array of multiple errors. 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```