How To Fix 28131 - Constraint has too many value assignment alternatives: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: 28 - Configuration

• Message number: 131

• Message text: Constraint has too many value assignment alternatives: &1

What causes this issue?

There is a maximum number of value assignment alternatives (rules) for
an individual constraint. The number of value assignment alternatives
is determined by the value inferences required and the use of the
logical operators OR and NOT.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Divide the constraint into several simpler constraints.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 28131 - Constraint has too many value assignment alternatives: &1 ?

  The SAP error message 28131, which states "Constraint has too many value assignment alternatives: &1," typically occurs in the context of SAP's configuration and data modeling, particularly when dealing with constraints in the context of data validation or business rules.
  Cause:
  This error arises when a constraint defined in the system has exceeded the maximum number of allowed value assignment alternatives. In SAP, constraints are used to enforce rules on data entries, and each constraint can have a limited number of alternatives or options that can be assigned to it. When the number of alternatives exceeds this limit, the system triggers this error.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review the Constraint Definition: Check the specific constraint that is causing the error. You need to identify which constraint has too many alternatives defined.
  
  
  Reduce the Number of Alternatives: If possible, reduce the number of value assignment alternatives for the constraint. This may involve:
  
  Merging similar alternatives.
  Removing unnecessary or redundant alternatives.
  Simplifying the logic of the constraint.
  
  
  
  Check Configuration Settings: Ensure that the configuration settings for constraints are set correctly. Sometimes, the limits can be adjusted based on the specific requirements of your business process.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for guidance on the specific limits for constraints in your version of SAP. This can provide insights into how many alternatives are permissible.
  
  
  Testing: After making changes, test the configuration to ensure that the error is resolved and that the business rules are still being enforced correctly.
  
  
  Seek Help from SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific system configuration.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context or solutions.
  Transaction Codes: Familiarize yourself with transaction codes related to constraint management, such as SE11 (Data Dictionary) or SE80 (Object Navigator), which can help you navigate and modify the constraints.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.