How To Fix VMP_MSG199 - Multiple activities in a network cannot share the same "Reference Point"

SAP Error Message - Details

• Message type: E = Error

• Message class: VMP_MSG - VMP Message Manager

• Message number: 199

• Message text: Multiple activities in a network cannot share the same "Reference Point"

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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Smart SAP Assistant

• What is the cause and solution for SAP error message VMP_MSG199 - Multiple activities in a network cannot share the same "Reference Point" ?

  The SAP error message VMP_MSG199 indicates that there are multiple activities within a network that are trying to share the same "Reference Point." This typically occurs in the context of project management or network planning within SAP, where activities are defined and linked to specific reference points for scheduling and resource allocation.
  Cause:
  The error arises when:
  
  Duplicate Reference Points: Two or more activities in the same network are assigned the same reference point, which is not allowed as each reference point should uniquely identify a specific activity or task.
  Incorrect Network Configuration: The network structure may not be set up correctly, leading to conflicts in reference point assignments.
  Data Entry Errors: Manual entry errors during the creation or modification of activities can lead to unintentional duplication of reference points.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Identify Duplicate Activities:
  
  Review the activities in the network to identify which ones are using the same reference point.
  You can do this by checking the activity details in the network structure.
  
  
  
  Modify Reference Points:
  
  Change the reference point for one or more of the conflicting activities to ensure that each activity has a unique reference point.
  This can typically be done in the activity details screen where you can edit the reference point field.
  
  
  
  Check Network Configuration:
  
  Ensure that the network is configured correctly and that there are no logical errors in the way activities are linked or structured.
  If necessary, consult with a project manager or SAP consultant to review the network design.
  
  
  
  Data Validation:
  
  Implement data validation checks to prevent future occurrences of this error. This can include setting up rules or guidelines for entering reference points.
  
  
  
  Testing:
  
  After making changes, test the network to ensure that the error no longer occurs and that the activities are functioning as expected.
  
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for project management and network planning for more detailed information on managing activities and reference points.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and what solutions they have implemented.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CJ20N (Project Builder) or CN41 (Network Overview) to navigate and manage project networks effectively.
  
  By following these steps, you should be able to resolve the VMP_MSG199 error and ensure that your network activities are correctly configured.