How To Fix T7018 - Predecessor activity category & no longer valid

SAP Error Message - Details

• Message type: E = Error

• Message class: T7 - Forex entry

• Message number: 018

• Message text: Predecessor activity category & no longer valid

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message T7018 - Predecessor activity category & no longer valid ?

  The SAP error message T7018 indicates that a predecessor activity category is no longer valid. This typically occurs in the context of project management or production planning within SAP, where activities are linked to one another based on their dependencies.
  Cause:
  The error can arise due to several reasons:
  
  Invalid Activity Category: The predecessor activity category specified in the project or task is no longer valid or has been deleted.
  Changes in Project Structure: If there have been changes in the project structure or if the activity categories have been modified, it can lead to this error.
  Configuration Issues: There may be configuration issues in the system that have led to the predecessor activity being marked as invalid.
  Data Integrity Issues: Data inconsistencies or corruption in the project data can also lead to this error.
  
  Solution:
  To resolve the T7018 error, you can take the following steps:
  
  
  Check Activity Categories:
  
  Verify the predecessor activity category in the project or task. Ensure that it is still valid and exists in the system.
  You can do this by navigating to the relevant transaction (e.g., CJ20N for project management) and checking the activity details.
  
  
  
  Update or Correct the Activity:
  
  If the predecessor activity category is indeed invalid, you may need to update it to a valid category.
  If the activity has been deleted or is no longer relevant, consider removing the dependency or replacing it with a valid activity.
  
  
  
  Review Project Structure:
  
  Check if there have been any recent changes to the project structure that might have affected the activity categories.
  If necessary, revert any changes that may have caused the issue.
  
  
  
  Consult Configuration Settings:
  
  If you suspect a configuration issue, consult with your SAP Basis or configuration team to ensure that the activity categories are correctly set up in the system.
  
  
  
  Data Consistency Check:
  
  Run data consistency checks to identify any other potential issues within the project data that may be causing the error.
  
  
  
  SAP Notes and Support:
  
  Check for any relevant SAP Notes that may address this specific error. SAP frequently releases updates and patches that can resolve known issues.
  If the problem persists, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CJ20N (Project Builder), CJ02 (Change Project), and others related to project management.
  Documentation: Review SAP documentation related to project management and activity categories for a better understanding of how they function within the system.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, providing insights or solutions from other users' experiences.
  
  By following these steps, you should be able to identify the cause of the T7018 error and implement a suitable solution.