How To Fix MPE_INSTALLATION_MSG079 - &1 and its parent network &2 activity &3 are not connected by precedence

SAP Error Message - Details

• Message type: E = Error

• Message class: MPE_INSTALLATION_MSG -

• Message number: 079

• Message text: &1 and its parent network &2 activity &3 are not connected by precedence

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 MPE_INSTALLATION_MSG079 - &1 and its parent network &2 activity &3 are not connected by precedence ?

  The SAP error message MPE_INSTALLATION_MSG079 indicates that there is a problem with the precedence of activities in a project or network. Specifically, it means that the specified activity (activity &3) is not connected by precedence to the parent network (network &2). This can occur in various SAP modules, particularly in project management or production planning.
  Cause:
  
  Missing Dependencies: The activity you are trying to execute or process does not have the required predecessor or successor activities defined. This means that the system does not recognize the logical flow of tasks.
  Incorrect Network Configuration: The network structure may not be set up correctly, leading to disconnections between activities.
  Manual Changes: If changes were made manually to the network or activities, it could lead to inconsistencies in the precedence relationships.
  Data Integrity Issues: There may be issues with the data integrity in the project or network, such as missing links or incorrect settings.
  
  Solution:
  
  Check Activity Precedence: Review the activity in question and ensure that it has the correct predecessor and successor activities defined. You can do this by navigating to the network or project structure in SAP and checking the relationships.
  Adjust Network Configuration: If the network is not configured correctly, you may need to adjust the settings to ensure that all activities are properly linked. This can involve adding missing dependencies or correcting any errors in the network structure.
  Recreate the Activity: If the activity is corrupted or incorrectly set up, consider deleting and recreating it to ensure that it is properly linked to the network.
  Use Transaction Codes: Utilize relevant transaction codes such as CJ20N (Project Builder) or CN21 (Create Network) to review and modify the network and activities.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on managing networks and activities in your version of SAP.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes related to project management and network planning, such as CJ20N, CN22, and CN41.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Roles and Permissions: Ensure that you have the necessary permissions to modify network activities and configurations.
  Testing Changes: After making changes, test the network to ensure that the error does not reoccur and that the activities are functioning as expected.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a technical consultant who can provide more in-depth assistance.