How To Fix FKKEXC257 - Unable to schedule payment &3 to cash desk &1/&2 (payment category &4)

FKKEXC257 - Overview

• Message type: E = Error

• Message class: FKKEXC - Message Class for External Payments

• Message number: 257

• Message text: Unable to schedule payment &3 to cash desk &1/&2 (payment category &4)

What causes this issue?

You cannot schedule the posting of payment &v1& with status &v2& again.
If the entry has one of the following statuses, the posting cannot be
scheduled again:
P:,,The payment has already been posted
,,or the entry has been transferred
,,to a payment lot.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

C:,,The entry is reversed.
E:,,The payment has already been reset,
,,no follow-on posting is necessary.

Error message extract from SAP system. Copyright SAP SE.

FKKEXC257 - Details

• The SAP error message FKKEXC257 indicates that there is an issue with scheduling a payment to a cash desk. This error typically arises in the context of the SAP Convergent Charging or SAP Contract Accounts Receivable and Payable (FI-CA) modules. Here’s a breakdown of the potential causes, solutions, and related information for this error:
  Causes:
  
  Cash Desk Configuration: The cash desk may not be properly configured or may not exist in the system.
  Payment Category Issues: The payment category specified in the error message may not be valid or may not be allowed for the cash desk.
  Insufficient Authorizations: The user may not have the necessary authorizations to schedule payments to the specified cash desk.
  System Settings: There may be system settings or parameters that prevent the scheduling of payments to the cash desk.
  Open Items: There may be open items or other transactions that are preventing the payment from being scheduled.
  
  Solutions:
  
  
  Check Cash Desk Configuration:
  
  Verify that