How To Fix QS788 - Language & must not be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: QS - QM: Master data

• Message number: 788

• Message text: Language & must not be changed

What causes this issue?

Because texts are already available in a previous language, you cannot
change the language.

System Response

How to fix this error?

A new language can be entered if you first reset the previous language
and delete the related texts.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message QS788 - Language & must not be changed ?

  The SAP error message QS788 ("Language & must not be changed") typically occurs when there is an attempt to change the language of a material or a document that is not allowed to be modified in that way. This error is often encountered in the context of Quality Management (QM) or Material Management (MM) modules when dealing with master data or documents that have language-specific attributes.
  Cause:
  
  Language Restriction: The system is designed to prevent changes to certain fields or attributes that are language-dependent. This is to maintain data integrity and consistency across different language versions of the data.
  Data Consistency: Changing the language of certain records may lead to inconsistencies, especially if the data has already been translated or if it is linked to other records.
  Configuration Settings: The system configuration may restrict changes to language fields for specific document types or material types.
  
  Solution:
  
  Check Configuration: Review the configuration settings in the SAP system to ensure that the language settings are correctly defined. This may involve checking the material type or document type settings in the relevant customizing transactions.
  Use Correct Language: If you need to create or modify records, ensure that you are using the correct language from the beginning. If the record is created in a specific language, it should be maintained in that language.
  Consult Documentation: Refer to SAP documentation or help resources for guidance on how to handle language-specific data. This may include checking the SAP Notes related to the error message.
  Contact Support: If the issue persists and you cannot find a resolution, consider reaching out to your SAP support team or SAP Help Desk for assistance. They may provide insights specific to your system configuration.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error message or provide additional context on handling language changes.
  Transaction Codes: Familiarize yourself with transaction codes related to material management (MM) and quality management (QM) that may help in troubleshooting the issue (e.g., MM01, MM02 for material master data).
  User Roles and Authorizations: Ensure that the user attempting to make the change has the necessary authorizations to modify the data in question.
  
  By following these steps, you should be able to address the QS788 error and understand the underlying reasons for its occurrence.