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

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message WS_MASS201 - The number of changeable fields from & is greater than & ?

  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, split your mass update into multiple smaller updates, each changing fewer fields.
  
  
  
  Check and adjust the configuration (if applicable):
  
  In some cases, the limit might be configurable by SAP support or via customizing, but this is generally not recommended unless you fully understand the impact.
  Consult SAP Notes or your SAP Basis/Development team to see if the limit can be increased safely.
  
  
  
  Use alternative methods:
  
  If you need to update many fields, consider using batch input, BAPIs, or custom programs that handle updates more flexibly.
  Ensure that the mass change tool you are using is appropriate for the volume and complexity of changes.
  
  
  
  
  Related Information:
  
  Transaction MASS: Standard SAP transaction for mass maintenance of master data.
  SAP Notes: Check SAP Service Marketplace for notes related to WS_MASS201 for any patches or updates.
  Performance considerations: Large mass changes can impact system performance; always test in a development or quality environment first.
  Authorization: Ensure you have the necessary authorizations to perform mass changes.
  
  
  Summary:
  
  Cause: Attempting to change more fields than allowed in a mass change operation.
  Solution: Reduce the number of fields changed at once or split the update into multiple steps.
  Additional: Consult SAP documentation or support for configuration options or alternative approaches.
  
  
  If you provide the exact context (e.g., which object or transaction you are using), I can help with more specific guidance.