How To Fix WS_MASS201 - The number of changeable fields from & is greater than &

WS_MASS201 - Overview

• Message type: E = Error

• Message class: WS_MASS - Settlement Management: Messages for Mass Processing

• Message number: 201

• Message text: The number of changeable fields from & is greater than &

What causes this issue?

For the mass change, only &SYST-MSGV2& changeable fields are allowed on
the selection screen.

System Response

The selection screen cannot be structured.

How to fix this error?

Reduce the number of changeable fields.

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.

WS_MASS201 - Details

• SAP Error Message:
  WS_MASS201 The number of changeable fields from & is greater than &
  
  
  Cause:
  This error occurs during a mass change operation (e.g., using transaction MASS or similar mass maintenance tools) when the number of fields you are trying to change exceeds the allowed or configured limit. SAP enforces a limit on how many fields can be changed simultaneously to prevent performance issues or unintended data inconsistencies.
  
  The first & in the message typically represents the object or entity (e.g., a table or business object).
  The second & represents the maximum allowed number of changeable fields for that object.
  
  
  Explanation:
  When performing mass changes, SAP restricts the number of fields that can be updated in one go. This is a safeguard to avoid large, potentially risky updates that could degrade system performance or cause data integrity problems.
  
  
  Solution:
  
  
  Reduce the number of fields you want to change in one mass update:
  
  Instead of changing many fields at once,