How To Fix CJ158 - Constraint & not valid

SAP Error Message - Details

• Message type: E = Error

• Message class: CJ - Project master data and structure

• Message number: 158

• Message text: Constraint & not valid

What causes this issue?

You are attempting to create time constraints for an activity, however
constraint &V1& is not allowed in this case.

How to fix this error?

Select one of the following constraints:
1 (must start on),
2 (cannot start before) or
3 (cannot start later than).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CJ158 - Constraint & not valid ?

  The SAP error message CJ158 "Constraint & not valid" typically occurs in the context of project management and controlling within SAP, particularly when dealing with project structures, WBS (Work Breakdown Structure) elements, or network activities. This error indicates that there is a constraint defined on a project element that is not valid or cannot be processed as expected.
  Causes of CJ158 Error
  
  Invalid Constraints: The constraint defined for a WBS element or network activity may not be valid due to incorrect settings or parameters.
  Missing Dependencies: The project structure may be missing necessary dependencies or relationships that are required for the constraints to be valid.
  Incorrect Dates: The start or finish dates defined for the project elements may not align with the constraints, leading to conflicts.
  Configuration Issues: There may be issues with the configuration settings in the project management module that affect how constraints are handled.
  Data Inconsistencies: There could be inconsistencies in the data entered for the project elements, such as overlapping dates or incorrect status.
  
  Solutions to CJ158 Error
  
  Review Constraints: Check the constraints defined for the affected WBS element or network activity. Ensure that they are set correctly and are valid according to the project requirements.
  Check Dependencies: Verify that all necessary dependencies and relationships are established. Ensure that predecessor and successor relationships are correctly defined.
  Adjust Dates: Review the start and finish dates for the project elements. Make sure they are consistent with the defined constraints and do not conflict with each other.
  Configuration Review: If you have access, review the configuration settings in the project management module to ensure that they are set up correctly for handling constraints.
  Data Validation: Perform a data validation check to identify any inconsistencies or errors in the project data. Correct any discrepancies found.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on handling constraints in your version of SAP.
  
  Related Information
  
  Transaction Codes: You may use transaction codes like CJ20N (Project Builder) or CJ02 (Change Project) to review and modify project structures.
  SAP Notes: Check SAP Notes for any known issues or patches related to the CJ158 error. SAP frequently updates its knowledge base with solutions for common errors.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a technical consultant who can provide more in-depth analysis and assistance.