How To Fix CN444 - Activities "predecessor" and "succesor" cannot be the same

CN444 - Overview

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 444

• Message text: Activities "predecessor" and "succesor" cannot be the same

Self-Explanatory Message

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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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CN444 - Details

• The SAP error message CN444 indicates that there is an issue with the relationship between activities in a project or network. Specifically, it states that the "predecessor" and "successor" activities cannot be the same. This error typically arises when you are trying to create or modify a dependency between two activities in a project, and both activities are set to the same one.
  
  Cause:
  
  Incorrect Activity Assignment: The most common cause is that the same activity is being assigned as both a predecessor and a successor in a dependency relationship.
  Data Entry Error: This can occur due to a simple mistake in data entry where the same activity ID is mistakenly entered in both fields.
  System Configuration: In some cases, it could be related to how the project or network is configured in the SAP system.
  
  
  Solution:
  
  Check Activity IDs: Review the activity IDs you are trying to link. Ensure that the predecessor and successor activities