How To Fix F1215 - System error: Error from external function module not yet rectified

F1215 - Overview

• Message type: E = Error

• Message class: F1 - FI Function Module Messages

• Message number: 215

• Message text: System error: Error from external function module not yet rectified

What causes this issue?

System error:
In the function module FI_ICCF_POST_DATA it was discovered that the
callup of function module FI_ICCF_POST_HEADER, previously an absolute
necessity, terminated with errors (XERROR-HEADER = 'X').
You must remove these errors before you can call up function module
FI_ICCF_POST_DATA.

System Response

The program ceases processing.
No data is posted.

How to fix this error?

Contact SAP.

Error message extract from SAP system. Copyright SAP SE.

F1215 - Details

• The SAP error message F1215, which states "System error: Error from external function module not yet rectified," typically indicates that there is an issue with an external function module that is being called during a financial transaction or process. This error can arise from various underlying causes, and resolving it may require a systematic approach.
  Possible Causes:
  
  External Function Module Issues: The external function module being called may have bugs or issues that need to be addressed.
  Configuration Errors: Incorrect configuration settings in the SAP system or in the external system that the function module is trying to interact with.
  Data Issues: Invalid or inconsistent data being passed to the function module can lead to errors.
  Authorization Problems: The user executing the transaction may not have the necessary authorizations to call the external function module.
  System Performance: Performance issues or timeouts in the external system can also lead to this error.
  
  Solutions:
  
  Check SAP Notes: Look for relevant