Get account-type requirements
The owner and detail fields required to create each External Account type through POST /external-accounts on this project — one ruleset per type. A type absent from requirements cannot be created through POST /external-accounts on this project. Cards are never listed here; card registration is not part of the public API.
walletExternal is resolved from the project’s wallet-provisioning vendor. bankUs is resolved per customer on a project holding both vendors: pass customerId to run the same resolution create runs for that customer — including its refusal when that customer cannot create bankUs at all — or omit it to receive the conservative default flagged with routingDependsOnCustomer.
Authorizations
Token from POST /auth/token
Query Parameters
Resolve bankUs for this customer (canonical cst_ TypeID). Ignored by every other type.
Response
The request has succeeded.
Reference response for GET /reference/account-type-requirements, resolved for the calling project. requirements is keyed by External Account type and carries exactly one ruleset per type — never a menu of vendors for the caller to choose between. A type absent from the map cannot be created through POST /external-accounts on this project. Cards are never listed here; card registration is not part of the public API.