> ## Documentation Index > Fetch the complete documentation index at: https://docs.layerfi.com/llms.txt > Use this file to discover all available pages before exploring further. # Fetch AR aging detail for a customer > Returns detailed accounts receivable aging information for a specific customer, including outstanding balances broken down by aging buckets (current, 1-30 days, 31-60 days, 61-90 days, 91+ days). ## OpenAPI ````yaml get /v1/businesses/{businessId}/invoices/ar-aging/customer/{customerId} openapi: 3.0.1 info: title: API version: latest servers: [] security: - BearerAuth: [] tags: [] externalDocs: url: / paths: /v1/businesses/{businessId}/invoices/ar-aging/customer/{customerId}: get: tags: [] summary: Fetch AR aging detail for a customer description: >- Returns detailed accounts receivable aging information for a specific customer, including outstanding balances broken down by aging buckets (current, 1-30 days, 31-60 days, 61-90 days, 91+ days). operationId: business.invoices.ar-aging.customer.get parameters: - name: businessId in: path description: The UUID of the business to fetch the AR aging detail for. required: true schema: type: string format: uuid - name: customerId in: path description: The UUID of the customer to fetch AR aging detail for. required: true schema: type: string format: uuid - name: Content-Type in: header description: Content-Type must be set to application/json. schema: type: string responses: '200': description: AR aging customer detail retrieved successfully. headers: {} content: application/json: schema: $ref: '#/components/schemas/ARAgingCustomerDetailResponse' '404': description: Business or customer not found. content: application/json: schema: $ref: '#/components/schemas/ApiError' deprecated: false components: schemas: ARAgingCustomerDetailResponse: type: object description: Detailed AR aging information for a specific customer. properties: type: type: string enum: - AR_Aging_Customer_Detail description: Type identifier for this response. as_of_date: type: string format: date-time nullable: true description: The effective date used to calculate aging buckets. customer: $ref: '#/components/schemas/ApiCustomerData' description: The customer details. buckets: type: array items: $ref: '#/components/schemas/ARAgingCustomerDetailBucket' description: Detailed breakdown of outstanding balances by aging bucket. current: type: integer format: int64 description: Total outstanding balance for invoices not yet past due in cents. days_1_30: type: integer format: int64 description: Total outstanding balance for invoices 1-30 days past due in cents. days_31_60: type: integer format: int64 description: Total outstanding balance for invoices 31-60 days past due in cents. days_61_90: type: integer format: int64 description: Total outstanding balance for invoices 61-90 days past due in cents. days_91_over: type: integer format: int64 description: Total outstanding balance for invoices 91+ days past due in cents. total: type: integer format: int64 description: Total outstanding balance across all aging buckets in cents. ApiError: type: object description: An error object returned in API error responses. properties: type: $ref: '#/components/schemas/ApiErrorType' description: >- A fixed category for the error, helpful for categorizing and processing errors. description: type: string description: A human-readable error description. error_enum: $ref: '#/components/schemas/ApiEnumErrorType' description: >- A stable, machine-readable identifier for programmatically handling specific error conditions. Only present for 4xx client errors—not included for 5xx server errors. Use this instead of parsing the description field, as enum values remain stable across API versions. nullable: true meta: type: object description: Optional additional information about the error. nullable: true required: - type - description ApiCustomerData: type: object properties: id: type: string format: uuid description: Unique identifier for the customer. external_id: type: string description: >- Unique ID of the customer in your system for linking purposes. **Idempotency key**. example: '31415926535' individual_name: type: string nullable: true description: >- Full name of the individual customer or contact at a corporate customer. company_name: type: string nullable: true description: Name of the company customer. email: type: string nullable: true description: Email address of the customer. mobile_phone: type: string nullable: true description: Mobile phone number of the customer. office_phone: type: string nullable: true description: Office phone number of the customer. address_string: type: string nullable: true description: Address of the customer. memo: type: string nullable: true description: >- Memo for any text you would like to associate with the customer (for example, to display to end users). status: type: string description: 'Status of the customer. Possible values: `ACTIVE`, `ARCHIVED`.' example: ACTIVE transaction_tags: type: array items: $ref: '#/components/schemas/ApiTag' ARAgingCustomerDetailBucket: type: object description: A bucket containing outstanding balance for a specific aging period. properties: start_day_number: type: integer nullable: true description: >- Start day of the aging bucket (e.g., 1 for 1-30 days). Null for current/not-yet-due invoices. end_day_number: type: integer nullable: true description: >- End day of the aging bucket (e.g., 30 for 1-30 days). Null for open-ended buckets (e.g., 91+ days). outstanding_value: type: integer format: int64 description: Outstanding balance for this aging bucket in cents. ApiErrorType: type: string enum: - ResourceArchived - AuthFailure - Plaid - Stripe - InvalidState - ResourceNotFound - InvalidParameters - JsonSerialization - Unknown - BadRequest - PaginationCursor - Conflict - LedgerOperationFailed ApiEnumErrorType: type: string description: >- Stable enum values for programmatic error handling. Only present in 4xx error responses. enum: - AccessCodeInvalid - BalanceSheetDoesNotBalance - BalanceSheetMissingAccount - BankStatementParserError - BillStateError - BulkCategorizeFailure - BulkMatchFailure - BusinessTaskAlreadyCompleted - BusinessTaskDeleted - CalendlyOAuthError - CallBookingError - CantUpdateTransactionInCustomerPayout - CantUpdateTransactionInVendorPayout - CheckPayrollConfigNotFound - CheckPayrollServiceNotFound - ClerkUserAlreadyExists - ConflictingQueryParams - CustomAccountAlreadyExists - CustomTransactionCsvParsingError - CustomTransactionUploadFailure - CustomerPayoutInputFormatError - DoesNotMatchExistingEntity - EmptyBatchRequest - ExpenseParserError - ExternalAccountBalanceReconciliationError - ExternalIdConflict - InvalidCategory - InvalidEffectiveDate - InvalidLedgerOperation - InvalidMonthlyAverageRange - InvalidMultiPartRequest - InvalidPaginationCursor - InvalidPayload - InvoiceDeleted - InvoiceNotFound - InvoiceReferenceMismatch - InvoiceStateError - ManualRateLimit - MultipleTagKeyFiltersUnsupported - NoCognitoUserFound - NoOpeningBalanceFound - NotYetReconciled - OnePasswordApiError - OnePasswordItemNotFound - OnePasswordVaultNotFound - OpenAICategorizationError - PaymentLinkInvalid - PayrollStateError - PeriodIsClosed - PeriodNotClosed - PhoneNumberAlreadyRegistered - PlaidApiError - PlaidConnectionBroken - PlaidCreateLinkTokenError - PlaidCredentialsNotConfigured - PlaidExchangePublicTokenError - PlaidGetInstitutionByIdError - PlaidGetItemError - PlaidInvalidEnvironment - PlaidItemAlreadyExists - PlaidItemNotFound - PlaidProcessorApiError - PlaidUnlinkItemError - QueryParamFormat - QueryParamMissing - QuickbooksBrokenConnection - QuickbooksConnectionAlreadyExists - QuickbooksConnectionAlreadySyncing - QuickbooksConnectionMissing - QuickbooksConnectionNotActivated - QuickbooksInvalidRequest - QuickbooksInvalidState - QuickbooksNoMatchingAccount - QuickbooksNonPostingAccountType - QuickbooksNotConfigured - QuickbooksOAuthCallbackInvalid - QuickbooksOAuthError - QuickbooksTokenExpired - ResourceArchived - ScheduleCNotConfigured - SmsNotEnabled - SpecifiedBadRequest - SpecifiedIdNotFound - SplitTransactionError - StepEvaluationBadRequest - StripeConnectAccountIdNotFound - StripeCredentialsNotConfigured - StripeGetBalanceForConnectAccountFailure - StripeRedirectOrRefreshUrlNotConfigured - TagFilterNotFound - UnexpectedQueryParam - UnitAccountsInUse - WrongAnswerType ApiTag: type: object properties: id: type: string format: uuid description: ID for the tag. key: type: string description: Key for the tag. example: ExampleTagKey dimension_display_name: type: string nullable: true description: Display name for the tag dimension. value: type: string description: Value for the tag. example: ExampleTagValue value_display_name: type: string nullable: true description: Display name for the tag value definition. dimension_id: type: string format: uuid description: ID of the tag dimension this tag belongs to. definition_id: type: string format: uuid description: ID of the tag value definition. archived_at: type: string format: date-time nullable: true description: When the tag was archived. required: - id - key - value - dimension_id - definition_id securitySchemes: BearerAuth: type: http scheme: bearer bearerFormat: JWT ````