How To Fix >2731 - Key &1 contains invalid characters

SAP Error Message - Details

• Message type: E = Error

• Message class: >2 -

• Message number: 731

• Message text: Key &1 contains invalid characters

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 >2731 - Key &1 contains invalid characters ?

  The SAP error message "2731 Key &1 contains invalid characters" typically indicates that a key (such as a field name, table name, or other identifier) contains characters that are not allowed according to SAP's naming conventions. This can occur in various contexts, such as when defining database objects, customizing settings, or working with certain transactions.
  Cause:
  
  Invalid Characters: The key may contain special characters, spaces, or other invalid characters that are not permitted in SAP naming conventions.
  Length Restrictions: The key may exceed the maximum length allowed for identifiers in SAP.
  Incorrect Format: The key may not follow the required format, such as starting with a letter or containing only alphanumeric characters and underscores.
  
  Solution:
  
  
  Check Naming Conventions: Review the SAP naming conventions for the specific object you are working with. Ensure that the key adheres to these rules:
  
  Must start with a letter.
  Can only contain letters, numbers, and underscores.
  Should not contain spaces or special characters.
  Must not exceed the maximum length (usually 30 characters for many identifiers).
  
  
  
  Modify the Key: If the key contains invalid characters, modify it to comply with the naming conventions. This may involve:
  
  Removing or replacing invalid characters.
  Shortening the key if it exceeds the length limit.
  Renaming the key to ensure it starts with a letter.
  
  
  
  Use Transaction Codes: If you are working within a specific transaction, ensure that you are using the correct transaction codes and that the keys you are entering are valid for that context.
  
  
  Check Custom Code: If the error arises from custom ABAP code, review the code to ensure that any keys being generated or used are valid.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines related to the object you are working with.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to this error message.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and what solutions they found.
  Debugging: If you have access to debugging tools, you can trace the execution to identify where the invalid key is being generated or used.
  
  By following these steps, you should be able to resolve the error message and ensure that your keys conform to SAP's requirements.