How To Fix PPEACT607 - Only one relationship is allowed between activity &2 and &3

SAP Error Message - Details

• Message type: E = Error

• Message class: PPEACT - Messages for iPPE ACT Application (Activities)

• Message number: 607

• Message text: Only one relationship is allowed between activity &2 and &3

What causes this issue?

Only one relationship can exist between activities located under the
same operation.
The relationship type is End-Start. A mode linkage
using the resource and a continuous load are required.

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

System Response

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 PPEACT607 - Only one relationship is allowed between activity &2 and &3 ?

  The SAP error message PPEACT607 ("Only one relationship is allowed between activity &2 and &3") typically occurs in the context of project management or production planning when you are trying to create or modify relationships between activities in a project or production order. This error indicates that there is already an existing relationship between the specified activities, and you are attempting to create a duplicate relationship.
  Cause:
  
  Duplicate Relationship: You are trying to create a relationship (e.g., finish-to-start, start-to-start) between two activities that already have an existing relationship.
  Incorrect Data Entry: There may be a mistake in the way the activities or relationships are being defined, leading to an attempt to create a relationship that already exists.
  System Configuration: In some cases, the system configuration or settings may restrict the creation of multiple relationships between the same activities.
  
  Solution:
  
  Check Existing Relationships: Review the existing relationships between the activities in question. You can do this by navigating to the activity details in the project or production order and checking the relationships tab.
  Delete or Modify Existing Relationship: If you find that a relationship already exists and you need to change it, you can delete the existing relationship and then create the new one as needed.
  Use Different Relationship Type: If you need to establish a different type of relationship, ensure that it is not already defined. If it is, you may need to adjust your project plan or production order accordingly.
  Consult Documentation: Refer to SAP documentation or help resources for guidance on managing activity relationships in your specific module (e.g., Project System, Production Planning).
  Contact Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CJ20N (Project Builder) or CO02 (Change Production Order) to navigate to the activities in question.
  SAP Notes: Check for any SAP Notes related to this error message for additional insights or patches that may address the issue.
  User Roles and Permissions: Ensure that you have the necessary permissions to modify relationships between activities, as restrictions may lead to errors.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.