How To Fix FCC1307 - Cannot specify task &1 as a predecessor of this task

SAP Error Message - Details

• Message type: E = Error

• Message class: FCC1 - Messages in Financial Closing Cockpit

• Message number: 307

• Message text: Cannot specify task &1 as a predecessor of this task

What causes this issue?

To specify task &v1& as a predecessor of this task, task &v1& must start
earlier than this task does.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FCC1307 - Cannot specify task &1 as a predecessor of this task ?

  The SAP error message FCC1307, which states "Cannot specify task &1 as a predecessor of this task," typically occurs in the context of project management or task scheduling within SAP, particularly in the Project System (PS) module. This error indicates that there is an issue with the task dependencies defined in your project.
  Cause:
  The error arises when you attempt to set a task as a predecessor for another task, but the system identifies that this relationship is not valid. Common reasons for this error include:
  
  Circular Dependency: You may be trying to create a circular dependency where Task A is a predecessor of Task B, and Task B is also a predecessor of Task A.
  Invalid Task Status: The task you are trying to set as a predecessor may not be in a valid status to be linked (e.g., it might be completed or not yet started).
  Task Type Restrictions: Certain task types may not allow for predecessor relationships.
  Project Structure Issues: The project structure may not support the relationship you are trying to create due to its configuration.
  
  Solution:
  To resolve the FCC1307 error, you can take the following steps:
  
  Check for Circular Dependencies: Review the task relationships to ensure that you are not creating a circular dependency. Adjust the predecessor relationships accordingly.
  Verify Task Status: Ensure that the task you are trying to set as a predecessor is in a valid status. If it is completed, you may need to adjust your project plan.
  Review Task Types: Check if the task types involved allow for predecessor relationships. If not, consider changing the task type or the relationship.
  Adjust Project Structure: If the project structure is causing the issue, you may need to reorganize the tasks or create new tasks that fit the desired dependencies.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on task dependencies in your version of SAP.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like CJ20N (Project Builder) or CJ02 (Change Project) to manage project tasks and dependencies.
  SAP Notes: Check SAP Notes for any known issues or patches related to task dependencies in your version of SAP.
  User Roles and Authorizations: Ensure that you have the necessary authorizations to modify task relationships in the project.
  
  If the issue persists after trying the above solutions, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.