How To Fix MPE_OAN012 - No start event exists in this operation activity network

MPE_OAN012 - Overview

• Message type: E = Error

• Message class: MPE_OAN - Operation Activity Network Messages

• Message number: 012

• 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.

Unfortunately, there isn't any extra information in this error notice.

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MPE_OAN012 - Details

• The SAP error message MPE_OAN012 indicates that there is no start event defined in the operation activity network for a particular operation. This error typically occurs in the context of project management or production planning when working with networks and activities in SAP.
  
  Cause:
  The error is usually caused by one of the following reasons:
  
  Missing Start Event: The operation activity network does not have a defined start event, which is necessary for the network to function correctly.
  Incorrect Configuration: The configuration of the operation or the network might be incorrect, leading to the absence of a start event.
  Data Entry Errors: There may be data entry errors in the network or operation setup that prevent the system from recognizing the start event.
  
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check the Network Configuration:
  
  Go to the network in question and verify that a start event is defined. You can do this by navigating to