> ## Documentation Index > Fetch the complete documentation index at: https://docs.slash.com/llms.txt > Use this file to discover all available pages before exploring further. # Unlink a payment from a bill > Remove a payment from a bill without touching the money. To cancel a payment that is awaiting approval or scheduled, void the bill instead; to cancel a pending ACH payment, use `POST /v2/transfers/ach/{transferId}/cancel`. ## OpenAPI ````yaml /openapi-v2.json delete /v2/bills/{billId}/payments/{paymentId} openapi: 3.1.0 info: title: Slash Public API V2 description: >- Send money for a Slash legal entity. Every request uses an API key. Transfer creation returns a Transfer that links its resulting transactions. version: 0.0.1 servers: - url: https://api.slash.com description: production security: - api_key: [] paths: /v2/bills/{billId}/payments/{paymentId}: parameters: - name: x-legal-entity in: header required: true description: >- The legal entity to act on. Required on every request; a user API key can act on any legal entity its user has access to. schema: type: string pattern: ^le_[a-zA-Z0-9]+$ - name: billId in: path required: true description: Bill id with the `bill_` prefix. schema: type: string - name: paymentId in: path required: true description: >- Payment id with the `bill_payment_` prefix, from the bill's `payments`. schema: type: string delete: summary: Unlink a payment from a bill description: >- Remove a payment from a bill without touching the money. To cancel a payment that is awaiting approval or scheduled, void the bill instead; to cancel a pending ACH payment, use `POST /v2/transfers/ach/{transferId}/cancel`. responses: '200': description: The bill without the payment. content: application/json: schema: $ref: '#/components/schemas/bill' '400': $ref: '#/components/responses/PublicApiV2Error400BillsPaymentsRemove' '401': $ref: '#/components/responses/PublicApiV2Error401Unauthorized' '403': $ref: >- #/components/responses/PublicApiV2Error403ForbiddenForbiddenLegalEntityNotAvailableUserApiKeyRequired '404': $ref: '#/components/responses/PublicApiV2Error404BillsPaymentsRemove' '409': $ref: '#/components/responses/PublicApiV2Error409CarrierBillReadOnly' '429': $ref: '#/components/responses/PublicApiV2RateLimited' '500': $ref: '#/components/responses/PublicApiV2Error500Internal' security: - api_key: [] components: schemas: bill: title: Bill description: >- Money your legal entity owes a vendor. `status` and `amounts.outstanding` are derived from the bill's payments and cannot be set directly. type: object properties: id: type: string description: Bill id with the `bill_` prefix. example: bill_2rj4l7hmrrrcv status: type: string description: >- Derived from the bill's payments. `draft` until a payment exists; `pending_approval` while a payment awaits approval; `rejected` when the latest approval was rejected; `scheduled` when a payment is scheduled; `payment_pending` while a payment is in flight; `partially_paid` when settled payments cover part of the total; `paid` when they cover all of it; `payment_failed` when the latest payment failed or was returned. enum: - draft - pending_approval - rejected - scheduled - payment_pending - paid - payment_failed - partially_paid source: type: string description: >- How the bill entered Slash. `api` for bills created through this API, `manual` for the dashboard, `email` for the accounts-payable inbox, `carrier_account` for bills pulled from a connected carrier portal. Carrier bills are read-only over the API. enum: - manual - email - carrier_account - api vendorContactId: type: string description: The vendor contact, readable at `GET /v2/contacts/{contactId}`. example: le_c_2rj4l7hmrrrcv destinationId: type: string description: >- The destination the bill is expected to be paid to, readable at `GET /v2/destinations/{destinationId}`. example: le_contact_destination_2rj4l7hmrrrcv ownerUserId: type: string description: >- The user responsible for the bill. Absent for bills that arrived by email and have not been assigned. example: u_2rj4l7hmrrrcv invoiceNumber: type: string description: The vendor's invoice number. example: INV-4471 invoiceDate: type: string format: date description: Invoice date as `YYYY-MM-DD`. example: '2026-09-01' dueDate: type: string format: date description: Due date as `YYYY-MM-DD`. example: '2026-10-01' currency: type: string pattern: ^[A-Z]{3}$ description: Uppercase ISO 4217 currency code shared by every amount on the bill. example: USD amounts: type: object description: Every amount is in `currency`, in minor units. properties: total: $ref: '#/components/schemas/Money' tax: $ref: '#/components/schemas/Money' discount: $ref: '#/components/schemas/Money' outstanding: $ref: '#/components/schemas/Money' required: - total - tax - discount - outstanding additionalProperties: false lineItems: type: array description: Line items in display order. items: $ref: '#/components/schemas/bill-line-item' documentIds: type: array description: >- Documents attached to the bill, readable at `GET /v2/documents/{documentId}`. items: type: string example: st_2rj4l7hmrrrcv payments: type: array description: Payments linked to the bill, oldest first. items: $ref: '#/components/schemas/bill-payment' notes: type: string description: Free-text notes visible to your organization. createdAt: type: string format: date-time description: When the bill was created. required: - id - status - source - currency - amounts - lineItems - documentIds - payments - createdAt additionalProperties: false Money: type: object description: A signed monetary amount expressed in minor units. properties: amount: type: integer description: Amount in the currency's minor units. currency: type: string pattern: ^[A-Z]{3}$ description: Uppercase ISO 4217 currency code. required: - amount - currency additionalProperties: false title: Money bill-line-item: title: BillLineItem description: >- One line of a bill. `total` is `unitAmount` × `quantity`, rounded to minor units. type: object properties: id: type: string description: Line item id with the `bill_line_item_` prefix. example: bill_line_item_2rj4l7hmrrrcv name: type: string description: What the line is for, as printed on the invoice. example: Hosting quantity: type: number description: Number of units. Fractional quantities are allowed. example: 1 unitAmount: $ref: '#/components/schemas/Money' total: $ref: '#/components/schemas/Money' required: - id - name - quantity - unitAmount - total additionalProperties: false bill-payment: title: BillPayment description: >- A payment linked to a bill. State lives on the underlying transfer and transaction; this is the bill's view of it. A payment is listed once its transfer or card purchase has produced a transaction (including an approval request or a scheduled payment). `status` and `detailedStatus` are that transaction's, as `GET /v2/transactions/{transactionId}` reports them. type: object properties: id: type: string description: >- Payment link id with the `bill_payment_` prefix. Unlink the payment with `DELETE /v2/bills/{billId}/payments/{paymentId}`. example: bill_payment_2rj4l7hmrrrcv transferId: type: string description: >- Id of the transfer that pays the bill, with the `transfer_intent_` prefix, readable at `GET /v2/transfers/{transferId}`. Absent for payments that are not yet a transfer (a scheduled payment whose transfer has not been constructed) or that were made outside the transfer rails. example: transfer_intent_2rj4l7hmrrrcv transactionId: type: string description: >- Id of the transaction that moved the money, with the `agg_tx_` prefix, readable at `GET /v2/transactions/{transactionId}`. For a card purchase it's the card transaction. Absent when the payment's only transactions are ones the transactions API doesn't return, such as a rejected or canceled approval request. example: agg_tx_2rj4l7hmrrrcv status: $ref: >- #/components/schemas/slashfi.models.entity.PublicApiV2.Transaction.Status.yaml detailedStatus: $ref: >- #/components/schemas/slashfi.models.entity.PublicApiV2.Transaction.DetailedStatus.yaml amount: $ref: '#/components/schemas/Money' createdAt: type: string format: date-time description: When the payment was linked to the bill. required: - id - status - detailedStatus - amount - createdAt additionalProperties: false PublicApiV2ErrorInvalidRequestShape: title: PublicApiV2ErrorInvalidRequestShape description: >- The body, query, or headers failed validation, or a required header is missing. `details` has one entry per failing location, keyed by JSON pointer or header name. allOf: - $ref: '#/components/schemas/Error' - type: object properties: code: type: string enum: - invalid_request details: type: object properties: {} additionalProperties: type: string required: - code - details PublicApiV2ErrorUnauthorized: title: PublicApiV2ErrorUnauthorized description: API key authentication is missing or invalid. allOf: - $ref: '#/components/schemas/Error' - type: object properties: code: type: string enum: - unauthorized details: type: object properties: {} additionalProperties: false required: - code - details PublicApiV2ErrorForbidden: title: PublicApiV2ErrorForbidden description: >- The credential is not permitted to perform this action on the resource. When the resource is a field of the request, `details` names that `field` and the `id` it received. allOf: - $ref: '#/components/schemas/Error' - type: object properties: code: type: string enum: - forbidden details: type: object properties: field: type: string description: Dot path of the request field at fault. id: type: string description: The identifier that field carried, when it is one. additionalProperties: false required: - code - details PublicApiV2ErrorForbiddenLegalEntity: title: PublicApiV2ErrorForbiddenLegalEntity description: The credential is not permitted to act for the selected legal entity. allOf: - $ref: '#/components/schemas/Error' - type: object properties: code: type: string enum: - forbidden details: type: object properties: {} additionalProperties: false required: - code - details PublicApiV2ErrorNotAvailable: title: PublicApiV2ErrorNotAvailable description: >- Public API v2 is not yet available. Use [Public API v1](https://docs.slash.com/introduction) in the meantime. allOf: - $ref: '#/components/schemas/Error' - type: object properties: code: type: string enum: - not_available details: type: object properties: {} additionalProperties: false required: - code - details PublicApiV2ErrorUserApiKeyRequired: title: PublicApiV2ErrorUserApiKeyRequired description: >- The API key is scoped to a legal entity rather than a user. Every v2 request needs a user API key, created under Settings → API keys in the Slash dashboard, together with the `x-legal-entity` header. allOf: - $ref: '#/components/schemas/Error' - type: object properties: code: type: string enum: - user_api_key_required details: type: object properties: {} additionalProperties: false required: - code - details PublicApiV2ErrorNotFound: title: PublicApiV2ErrorNotFound description: >- No resource matches the identifier. When the identifier is a field of the request, `details` names that `field` and the `id` it received. allOf: - $ref: '#/components/schemas/Error' - type: object properties: code: type: string enum: - not_found details: type: object properties: field: type: string description: Dot path of the request field at fault. id: type: string description: The identifier that field carried, when it is one. additionalProperties: false required: - code - details PublicApiV2ErrorCarrierBillReadOnly: title: PublicApiV2ErrorCarrierBillReadOnly description: >- The bill was pulled from a connected carrier portal and is managed by that connection. It can be read but not changed. allOf: - $ref: '#/components/schemas/Error' - type: object properties: code: type: string enum: - carrier_bill_read_only details: type: object properties: {} additionalProperties: false required: - code - details PublicApiV2ErrorInternal: title: PublicApiV2ErrorInternal description: >- Slash could not complete the request. Quote `referenceId` when contacting Slash support. allOf: - $ref: '#/components/schemas/Error' - type: object properties: code: type: string enum: - internal details: type: object properties: {} additionalProperties: false required: - code - details slashfi.models.entity.PublicApiV2.Transaction.Status.yaml: type: string description: Coarse transaction state. enum: - pending - posted - failed title: Status slashfi.models.entity.PublicApiV2.Transaction.DetailedStatus.yaml: type: string description: Exact transaction lifecycle state across every category. enum: - pending - pending_destination - pending_approval - in_review - scheduled - canceled - failed - settled - declined - refund - reversed - returned - dispute title: DetailedStatus Error: type: object properties: code: type: string description: >- Machine-readable reason; branch on this, not on `message`. Every code an endpoint can return is listed on its reference page; the ones shared by all endpoints are explained in the Errors guide. example: invalid_request message: type: string description: >- Human-readable explanation, safe to show to an operator. Wording may change; use `code` and `details` programmatically. details: type: object description: >- The values behind `message`, keyed per `code`. For example `insufficient_funds` carries `available` and `requested`; `invalid_request` from contract validation carries one entry per failing field, keyed by JSON pointer. Empty when the code has no variable data. additionalProperties: type: string example: available: $120.00 requested: $500.00 referenceId: type: string description: Unique id of this failure. Quote it when contacting Slash support. example: 4001-2alj5if required: - code - message - details - referenceId additionalProperties: false title: Error responses: PublicApiV2Error400BillsPaymentsRemove: description: >- - `invalid_request (request shape)` — The body, query, or headers failed validation, or a required header is missing. `details` has one entry per failing location, keyed by JSON pointer or header name. content: application/json: schema: $ref: '#/components/schemas/PublicApiV2ErrorInvalidRequestShape' examples: invalid_request_request_shape: summary: invalid_request (request shape) value: code: invalid_request message: 'Invalid `billId`: Expected a valid ID beginning with "bill_".' details: /billId: Expected a valid ID beginning with "bill_". referenceId: 4001-2alj5if PublicApiV2Error401Unauthorized: description: '- `unauthorized` — API key authentication is missing or invalid.' content: application/json: schema: $ref: '#/components/schemas/PublicApiV2ErrorUnauthorized' examples: unauthorized: summary: unauthorized value: code: unauthorized message: API key authentication is missing or invalid. details: {} referenceId: 4011-2alj5if PublicApiV2Error403ForbiddenForbiddenLegalEntityNotAvailableUserApiKeyRequired: description: >- - `forbidden` — The credential is not permitted to perform this action on the resource. When the resource is a field of the request, `details` names that `field` and the `id` it received. - `forbidden (legal entity)` — The credential is not permitted to act for the selected legal entity. - `not_available` — Public API v2 is not yet available. Use [Public API v1](https://docs.slash.com/introduction) in the meantime. - `user_api_key_required` — The API key is scoped to a legal entity rather than a user. Every v2 request needs a user API key, created under Settings → API keys in the Slash dashboard, together with the `x-legal-entity` header. content: application/json: schema: anyOf: - title: forbidden allOf: - $ref: '#/components/schemas/PublicApiV2ErrorForbidden' - title: forbidden (legal entity) allOf: - $ref: '#/components/schemas/PublicApiV2ErrorForbiddenLegalEntity' - title: not_available allOf: - $ref: '#/components/schemas/PublicApiV2ErrorNotAvailable' - title: user_api_key_required allOf: - $ref: '#/components/schemas/PublicApiV2ErrorUserApiKeyRequired' examples: forbidden: summary: forbidden value: code: forbidden message: This credential is not permitted to do that. details: {} referenceId: 4031-2alj5if forbidden_legal_entity: summary: forbidden (legal entity) value: code: forbidden message: This credential is not permitted to do that. details: {} referenceId: 4031-2alj5if not_available: summary: not_available value: code: not_available message: >- Public API v2 is not yet available. Use Public API v1 (https://docs.slash.com/introduction) in the meantime. details: {} referenceId: 4031-2alj5if user_api_key_required: summary: user_api_key_required value: code: user_api_key_required message: >- Public API v2 requires a user API key. Create one under Settings → API keys in the Slash dashboard. details: {} referenceId: 4031-2alj5if PublicApiV2Error404BillsPaymentsRemove: description: >- - `not_found` — No resource matches the identifier. When the identifier is a field of the request, `details` names that `field` and the `id` it received. content: application/json: schema: $ref: '#/components/schemas/PublicApiV2ErrorNotFound' examples: not_found_bill_id: summary: not_found (billId) value: code: not_found message: '`billId` bill_2rj4l7hmrrrcv was not found.' details: field: billId id: bill_2rj4l7hmrrrcv referenceId: 4041-2alj5if not_found_payment_id: summary: not_found (paymentId) value: code: not_found message: '`paymentId` bill_payment_2rj4l7hmrrrcv was not found.' details: field: paymentId id: bill_payment_2rj4l7hmrrrcv referenceId: 4041-2alj5if PublicApiV2Error409CarrierBillReadOnly: description: >- - `carrier_bill_read_only` — The bill was pulled from a connected carrier portal and is managed by that connection. It can be read but not changed. content: application/json: schema: $ref: '#/components/schemas/PublicApiV2ErrorCarrierBillReadOnly' examples: carrier_bill_read_only: summary: carrier_bill_read_only value: code: carrier_bill_read_only message: Bills from a connected carrier account are read-only. details: {} referenceId: 4091-2alj5if PublicApiV2RateLimited: description: >- The request exceeded the applicable rate limit. The response body is plain text, not the error object; clients must not depend on its wording. content: text/plain: schema: type: string example: You are rate limited PublicApiV2Error500Internal: description: >- - `internal` — Slash could not complete the request. Quote `referenceId` when contacting Slash support. content: application/json: schema: $ref: '#/components/schemas/PublicApiV2ErrorInternal' examples: internal: summary: internal value: code: internal message: >- An unexpected error occurred. If this keeps happening, contact Slash support with the reference id below. details: {} referenceId: 5001-2alj5if securitySchemes: api_key: type: apiKey name: X-API-Key in: header description: >- User API key authentication. Create a key under Settings → API keys in the Slash dashboard (https://app.slash.com/global-settings/api-keys) and send the `x-legal-entity` header naming the legal entity to act on with every request. Keys scoped to a legal entity are rejected with `403 user_api_key_required`. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.