How To Fix SV520 - Master program of the user exits must not be of type &.

SAP Error Message - Details

• Message type: E = Error

• Message class: SV - View Maintenance: Customize Messages

• Message number: 520

• Message text: Master program of the user exits must not be of type &.

What causes this issue?

The program you specified is of type &V1&. This program type is not
supported as a master program for the FORM Routines of your user exits.

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?

Create your form routines in a program of type 'M' (module pool), 'S'
(subroutine pool), or '1' (online program). You can not define your form
routines in a function group (type 'F'), since the access mechanism
performed on the global data in view cluster maintenance is not
supported in this case.
Note:
Include the INCLUDE statement INCLUDE LSVCMCOD in your program to have
access to the global data in view cluster maintenance.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SV520 - Master program of the user exits must not be of type &. ?

  The SAP error message SV520 indicates that there is an issue with the user exit implementation in your SAP system. Specifically, it means that the master program of the user exits is of an incorrect type. This typically occurs when the user exit is not defined correctly or is not compatible with the expected program type.
  Cause:
  
  Incorrect Program Type: The user exit is defined in a program that is not of the expected type (e.g., it might be a report program instead of a function module).
  Configuration Issues: There may be configuration issues in the user exit settings or the way the user exit is being called.
  Missing or Incorrect Implementation: The user exit may not be implemented correctly, or the necessary code may be missing.
  
  Solution:
  
  Check User Exit Definition: Verify the definition of the user exit in the SAP system. Ensure that it is defined in the correct program type.
  Review Implementation: Go through the implementation of the user exit to ensure that it adheres to the required standards and is implemented in the correct program.
  Correct Program Type: If the user exit is in the wrong type of program, you may need to move it to the correct program type or create a new user exit in the appropriate program.
  Consult Documentation: Refer to SAP documentation or notes related to the specific user exit you are working with to ensure compliance with SAP standards.
  Debugging: If necessary, use debugging tools to trace the execution and identify where the error is occurring.
  
  Related Information:
  
  User Exits: User exits are predefined points in SAP programs where you can add your own custom code. They are often used to enhance standard SAP functionality without modifying the original code.
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific user exit you are working with.
  Transaction Codes: You can use transaction codes like SMOD (for user exits) and CMOD (for project management) to manage and implement user exits in SAP.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.