How To Fix MSG_CL_ER199 - Application key cannot be empty

SAP Error Message - Details

• Message type: E = Error

• Message class: MSG_CL_ER - Message Class for Enterprise Registry

• Message number: 199

• Message text: Application key cannot be empty

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 MSG_CL_ER199 - Application key cannot be empty ?

  The SAP error message MSG_CL_ER199 ("Application key cannot be empty") typically occurs when a required field, specifically the application key, is not populated in a transaction or during a process that requires it. This error is often encountered in the context of configuration or data entry in SAP systems, particularly when dealing with classification or master data.
  Cause:
  
  Missing Input: The application key field is left blank when it is required for the operation you are trying to perform.
  Configuration Issues: There may be a misconfiguration in the system that leads to the application key not being set or recognized.
  Data Entry Errors: Users may inadvertently skip the application key field during data entry.
  Custom Development: If there are custom programs or enhancements, they may not be handling the application key correctly.
  
  Solution:
  
  Check Input Fields: Ensure that the application key field is filled in correctly. If you are entering data manually, double-check that you have not overlooked this field.
  Review Configuration: If you are a system administrator or have access to configuration settings, review the relevant configuration settings to ensure that the application key is properly defined and required.
  Consult Documentation: Refer to SAP documentation or help resources related to the specific transaction or module you are working with to understand the requirements for the application key.
  Debugging: If you have access to debugging tools, you can trace the process to see where the application key is being set or why it is not being populated.
  Contact Support: If the issue persists and you cannot identify the cause, consider reaching out to your SAP support team or consulting SAP Notes for any known issues related to this error.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any updates or patches that may address this issue.
  Transaction Codes: Identify the specific transaction code where the error occurs to narrow down the context.
  User Roles: Ensure that the user has the necessary permissions to enter data in the relevant fields.
  Training: If this error is common among users, consider providing training or documentation to help them understand the importance of the application key.
  
  By following these steps, you should be able to resolve the MSG_CL_ER199 error and ensure that the application key is correctly populated in your SAP transactions.