How To Fix PSISSO026 - Error in a scheduling module

SAP Error Message - Details

• Message type: E = Error

• Message class: PSISSO - PS Logistic Information System: Individual Overviews

• Message number: 026

• Message text: Error in a scheduling module

What causes this issue?

An error occured when determining fields for duration or work.

System Response

The system continues to process the information.

How to fix this error?

Contact your system administrator.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PSISSO026 - Error in a scheduling module ?

  The SAP error message PSISSO026 typically indicates that there is an issue with the scheduling module in the Project System (PS) component of SAP. This error can arise due to various reasons, such as incorrect settings, missing data, or inconsistencies in the project structure.
  Cause:
  
  Missing or Incorrect Data: The scheduling module may be unable to find necessary data, such as dates, durations, or dependencies between tasks.
  Inconsistent Project Structure: If the project structure is not properly defined or if there are inconsistencies in the relationships between activities, this error can occur.
  Configuration Issues: Incorrect configuration settings in the project system or scheduling parameters can lead to this error.
  Locked Objects: Sometimes, if the project or certain objects are locked by another user or process, it can prevent the scheduling module from functioning correctly.
  
  Solution:
  
  Check Project Data: Review the project data for any missing or incorrect entries. Ensure that all activities have valid start and finish dates, durations, and dependencies.
  Validate Project Structure: Ensure that the project structure is consistent. Check for any missing links between tasks and verify that all activities are properly defined.
  Review Configuration Settings: Check the configuration settings related to the scheduling module in the Project System. Ensure that they are set up correctly according to your organization's requirements.
  Unlock Objects: If the project or certain objects are locked, coordinate with your team to unlock them. You can use transaction codes like SM12 to check for locked entries.
  Use Transaction Codes: Utilize transaction codes such as CJ20N (Project Builder) to analyze and correct any issues in the project structure.
  Check Logs: Review any logs or detailed error messages that may provide more context about the issue. This can help in pinpointing the exact cause of the error.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to PSISSO026 for any specific patches or updates that may address this error.
  Documentation: Refer to SAP documentation for the Project System module for best practices in project scheduling and management.
  Community Forums: Engage with SAP community forums or support channels for additional insights and solutions from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a technical consultant who specializes in the Project System module.