How To Fix MPE_SAS_MSG009 - No start event exists in this operation activity network

SAP Error Message - Details

• Message type: E = Error

• Message class: MPE_SAS_MSG - Message Class for Status and Action Schema

• Message number: 009

• Message text: No start event exists in this operation activity network

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_SAS_MSG009 - No start event exists in this operation activity network ?

  The SAP error message MPE_SAS_MSG009 indicates that there is no start event defined in the operation activity network for a specific operation. This error typically occurs in the context of project management or production planning within SAP, particularly when dealing with networks and activities in the Project System (PS) or Production Planning (PP) modules.
  Cause:
  The error can arise due to several reasons:
  
  Missing Start Event: The operation activity network does not have a defined start event, which is necessary for the system to initiate the operation.
  Incorrect Configuration: The configuration of the network or the operation may be incorrect, leading to the absence of a start event.
  Data Inconsistencies: There may be inconsistencies in the data related to the project or production order that prevent the system from recognizing the start event.
  Network Structure Issues: The structure of the network may not be properly set up, leading to missing links between activities.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Network Structure:
  
  Go to the network in question and verify that it has a defined start event. You can do this by navigating to the network in the SAP GUI and checking the event assignments.
  
  
  
  Define Start Event:
  
  If a start event is missing, you may need to create or assign a start event to the operation activity network. This can typically be done in the network maintenance transaction (e.g., CN21 for creating networks).
  
  
  
  Review Activity Relationships:
  
  Ensure that the relationships between activities in the network are correctly defined. Each activity should have appropriate predecessor and successor relationships.
  
  
  
  Check for Data Inconsistencies:
  
  Review the data related to the project or production order for any inconsistencies. This includes checking for any missing or incorrect entries in the master data.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on setting up networks and activities, as well as troubleshooting common issues.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance. They may provide insights specific to your system configuration.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CN21 (Create Network), CN22 (Change Network), and CN03 (Display Network) for managing networks.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, providing additional insights or solutions.
  
  By following these steps, you should be able to identify and resolve the cause of the MPE_SAS_MSG009 error in your SAP system.