How To Fix 28478 - Allowed values restricted by equivalence

SAP Error Message - Details

• Message type: E = Error

• Message class: 28 - Configuration

• Message number: 478

• Message text: Allowed values restricted by equivalence

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 28478 - Allowed values restricted by equivalence ?

  The SAP error message 28478, "Allowed values restricted by equivalence," typically occurs in the context of data entry or configuration where a field's input is being validated against a set of predefined values or equivalences. This error indicates that the value you are trying to enter is not allowed because it does not match the expected equivalence set.
  Cause:
  
  Invalid Input: The value you are trying to enter does not match any of the allowed values defined in the system.
  Configuration Issues: The equivalence table or allowed values may not be correctly configured, leading to restrictions that prevent valid entries.
  Data Consistency: The system may have rules that restrict certain values based on the context or related data entries.
  
  Solution:
  
  Check Allowed Values: Review the allowed values for the field in question. You can usually find this in the configuration settings or documentation related to the specific module you are working with.
  Correct Input: Ensure that the value you are entering is one of the allowed values. If you are unsure, consult the relevant documentation or help resources.
  Review Configuration: If you have access, check the configuration settings for the equivalence table or the field in question. Ensure that the values are correctly defined and that there are no discrepancies.
  Consult with SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support or your internal SAP team for assistance. They may have additional insights or access to logs that can help diagnose the issue.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may need to use specific transaction codes to access configuration settings or data entry screens.
  Documentation: Refer to SAP's official documentation or help resources for detailed information on the specific module you are working with.
  User Forums: SAP community forums can be a valuable resource for finding similar issues faced by other users and potential solutions.
  
  By following these steps, you should be able to identify the cause of the error and take appropriate action to resolve it.