How To Fix /SMB/CONT_RESTRUCT156 - Key of table &1 obtains a field of datatype LANG

SAP Error Message - Details

• Message type: E = Error

• Message class: /SMB/CONT_RESTRUCT -

• Message number: 156

• Message text: Key of table &1 obtains a field of datatype LANG

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SMB/CONT_RESTRUCT156 - Key of table &1 obtains a field of datatype LANG ?

  The SAP error message /SMB/CONT_RESTRUCT156 indicates that there is an issue with a key of a table that is trying to obtain a field of datatype LANG. This typically occurs in the context of data structures or database tables where a language field is being used incorrectly as part of a key.
  
  Cause:
  
  
  Key Definition: The error arises when a field of type LANG (which is used to store language keys) is included in the key definition of a table or structure. In SAP, language fields are not allowed to be part of the primary key or unique key of a table because they are not unique across different languages.
  
  
  Data Model Issues: This can happen during the restructuring of a table or when trying to create a new table or structure that incorrectly includes a language field in its key.
  
  
  Custom Development: If you are working with custom tables or structures, this error