Books a cash or scheduled disbursement that settles all or part of a bill, updating the outstanding payable and linking treasury activity.
Provide funding source details consistent with your configured payment rails so downstream bank reconciliation stays accurate.

IMPORTANT: Notice this operation has a redundancy between the bill_id path parameter and the billId attribute in the request body, which takes precedence and is used in internal logic. When executing this operation, both IDs must match, otherwise the request will be rejected. This is a legacy redundancy and will be removed in future versions of this operation.