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

PPEACT607 - Overview

• 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.

PPEACT607 - Details

• 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