How To Fix EPS020 - Unexpected exception &2 while calling subprogram &1

EPS020 - Overview

• Message type: E = Error

• Message class: EPS - Payment Scheme

• Message number: 020

• Message text: Unexpected exception &2 while calling subprogram &1

What causes this issue?

Subprogram &V1& was terminated with an exception (&V2&) that the
developer of the calling program (&V3& &V4&) did not expect, or is not
permitted at this point.
The program is in an unplanned situation and is, therefore terminated.

System Response

Program termination (if necessary with short dump).

How to fix this error?

Note the message, data and entries that lead to the error. Send an error
message.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

EPS020 - Details

• The SAP error message EPS020, which states "Unexpected exception &2 while calling subprogram &1," typically indicates that an unexpected error occurred during the execution of a subprogram in an SAP system. This error can arise from various underlying issues, including but not limited to:
  Causes:
  
  Coding Errors: There may be bugs or unhandled exceptions in the ABAP code of the subprogram being called.
  Data Issues: The data being processed may not meet the expected format or constraints, leading to runtime errors.
  Configuration Problems: Incorrect configuration settings in the system can lead to unexpected behavior during program execution.
  System Resource Issues: Insufficient memory or other system resources can cause unexpected exceptions.
  Transport Issues: If the subprogram was recently transported from another system, there may be inconsistencies or missing dependencies.
  
  Solutions:
  
  Debugging: Use the ABAP debugger to step through the code of the subprogram to identify where the exception is being raised. Look for any unhandled exceptions or logical errors.
  Check