How To Fix VN131 - FORM routine & could not be found in program &

VN131 - Overview

• Message type: E = Error

• Message class: VN - Nachrichtensteuerung

• Message number: 131

• Message text: FORM routine & could not be found in program &

What causes this issue?

You have entered a FORM routine which has not been specified in the
program.

System Response

In this case, the system only gives a warning message which you should
observe. If you enter an incorrect program or FORM routine here, no
parameters or text variables will be replaced. In addition, you will
not be able to alter the change indicator or run a program to determine
the output issue date.
Program RSNAST00 (RSNASTOSO) ignores the warning message generated by
the incorrect entry so that processing can continue and the posting can
be made.

How to fix this error?

Please correct your entries. Check whether the problem is due to a
typing error.
Maintain valid FORM routines and programs that facilitate the parameter
replacement functions.

Error message extract from SAP system. Copyright SAP SE.

VN131 - Details

• The SAP error message:
  VN131 FORM routine & could not be found in program &
  Explanation:
  
  
  
  Cause:
  This error occurs when the SAP system tries to call a FORM routine (a subroutine in ABAP) that does not exist in the specified program. The placeholders & are replaced by the actual FORM routine name and program name at runtime. Essentially, the program is trying to execute a FORM routine that is either misspelled, deleted, or never created.
  
  
  Typical Scenario:
  This often happens in user exits, BADIs, or custom enhancements where a FORM routine is called but the routine is missing. It can also occur if a standard SAP program is modified or if a transport is incomplete.
  
  
  
  Cause Details
  
  The FORM routine name is incorrect or missing.
  The program name is incorrect or the program is not active.
  The FORM routine was deleted or not included in the program.
  A custom enhancement or user exit calls a FORM routine that is not