How To Fix 28451 - Use of constraint: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: 28 - Configuration

• Message number: 451

• Message text: Use of constraint: &1

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message 28451 - Use of constraint: &1 ?

  The SAP error message "28451 Use of constraint: &1" typically occurs in the context of data modeling or when working with database constraints in SAP systems. This error indicates that a specific constraint (identified by &1) is being used in a way that is not allowed or is causing a conflict.
  Cause:
  
  Constraint Violation: The error may arise when an operation attempts to violate a defined constraint, such as a primary key, foreign key, or unique constraint.
  Incorrect Configuration: The constraint may not be properly configured or may be conflicting with other constraints or data entries.
  Data Integrity Issues: There may be existing data in the database that does not comply with the constraints defined, leading to this error when trying to perform operations like insert, update, or delete.
  
  Solution:
  
  Check Constraint Definition: Review the definition of the constraint mentioned in the error message. Ensure that it is correctly defined and that it aligns with the intended data model.
  Data Validation: Validate the data being processed to ensure it complies with the constraints. This may involve checking for duplicates, ensuring foreign key relationships are maintained, etc.
  Adjust Data: If existing data violates the constraint, you may need to clean up the data to ensure compliance. This could involve deleting or updating records that are causing the conflict.
  Modify Constraints: If the constraint is too restrictive for your use case, consider modifying or removing it, but be cautious as this may impact data integrity.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance related to the constraint in question.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may need to use specific transaction codes (like SE11 for Data Dictionary) to view or modify the constraints.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Debugging: If the error persists, consider enabling debugging to trace the exact point of failure and gather more context about the operation being performed.
  
  If you continue to experience issues, it may be beneficial to consult with your SAP Basis or development team for further assistance.