How To Fix /SAPAPO/OM_ERROR303 - Successor activity is a dummy activity

/SAPAPO/OM_ERROR303 - Overview

• Message type: E = Error

• Message class: /SAPAPO/OM_ERROR -

• Message number: 303

• Message text: Successor activity is a dummy activity

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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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/OM_ERROR303 - Successor activity is a dummy activity ?

  The SAP error message /SAPAPO/OM_ERROR303 indicates that there is an issue with a successor activity in the context of Advanced Planning and Optimization (APO) within SAP. Specifically, the error states that the successor activity is a "dummy activity." This typically means that the activity in question does not have any meaningful operations or tasks associated with it, which can disrupt the planning process.
  
  Cause:
  
  
  Dummy Activity Definition: In SAP APO, a dummy activity is often used as a placeholder in a network or project. It does not perform any actual work or consume resources. If a successor activity is defined as a dummy, it cannot be linked to other activities that require actual processing.
  
  
  Incorrect Activity Configuration: The configuration of the activities in the planning model may be incorrect, leading to the identification of a successor as a dummy.
  
  
  Planning Sequence Issues: The planning sequence may not be properly defined, causing the system to