> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://citi-demo.ferndocs.com/enterprises/api-reference/payment-acceptance/payer-id-management-services/payer-id/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://citi-demo.ferndocs.com/_mcp/server.

# Payer ID


## API Docs

- Payer ID [Update, Add, or Remove Merchant and Beneficiary Details Associated with a Specific Payer ID](https://citi-demo.ferndocs.com/enterprises/api-reference/payment-acceptance/payer-id-management-services/payer-id/payer-id-update-assignee-details.md)
- Payer ID [Activate/Reactivate/Deactivate Payer IDs](https://citi-demo.ferndocs.com/enterprises/api-reference/payment-acceptance/payer-id-management-services/payer-id/payer-id-maintenance.md)
- Payer ID [Inquire About Statuses of a Single Payer ID or Assignee ID](https://citi-demo.ferndocs.com/enterprises/api-reference/payment-acceptance/payer-id-management-services/payer-id/payer-id-inquiry.md)
- Payer ID [Update Account/Instruction Currency Values](https://citi-demo.ferndocs.com/enterprises/api-reference/payment-acceptance/payer-id-management-services/payer-id/payer-id-update-account.md)

## OpenAPI Specification

The raw OpenAPI 3.1 specification for this API is available at:
- [OpenAPI JSON](https://citi-demo.ferndocs.com/openapi.json)
- [OpenAPI YAML](https://citi-demo.ferndocs.com/openapi.yaml)