How To Fix EA591 - Processing using function module -> ID remains blank

EA591 - Overview

• Message type: E = Error

• Message class: EA - IDoc Basis Messages

• Message number: 591

• Message text: Processing using function module -> ID remains blank

What causes this issue?

When creating a process code for which processing is designated to be
via function modules the identification is maintained in table TBD52
and remains blank here. It is only referred to for display.

System Response

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

How to fix this error?

First save your process code and then maintain table TBD52 via the
programmed jump from the transaction or via <DS:TRAN.BD67>transaction
BD67</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EA591 - Processing using function module -> ID remains blank ?

  The SAP error message EA591, which states "Processing using function module -> ID remains blank," typically occurs when there is an issue with the processing of a function module in SAP. This error can arise in various contexts, such as during the execution of a program, report, or transaction that involves function modules.
  Causes:
  
  Missing or Incorrect Input Parameters: The function module may require certain input parameters that are not being provided or are incorrectly formatted.
  
  Configuration Issues: There may be configuration settings in the system that are not set up correctly, leading to the function module not being able to process the request.
  Authorization Issues: The user executing the function may not have the necessary authorizations to access the function module or the data it requires.
  Data Integrity Issues: There may be issues with the data being processed, such as missing records or invalid data formats.
  Custom Code Issues: If the function module is part