How To Fix WO646 - Recursive call of & - Expand not possible

WO646 - Overview

• Message type: E = Error

• Message class: WO - WF: Messages for Workflow Wizards

• Message number: 646

• Message text: Recursive call of & - Expand not possible

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 WO646 - Recursive call of & - Expand not possible ?

  The SAP error message WO646 ("Recursive call of & - Expand not possible") typically occurs in the context of SAP's Work Order (WO) or similar applications when there is an attempt to expand a hierarchy or structure that leads to a recursive loop. This can happen in various scenarios, such as when trying to display or process a work order that references itself or has circular dependencies.
  
  Cause:
  
  Circular References: The most common cause of this error is a circular reference in the data structure. For example, if a work order references another work order that, in turn, references the original work order, it creates a loop.
  Hierarchical Data Issues: If the data structure is hierarchical (like BOMs or work orders), and there are incorrect parent-child relationships, it can lead to recursive calls.
  
  Configuration Issues: Sometimes, incorrect configuration in the system can lead to unexpected behavior, including recursive calls.
  
  
  Solution:
  
  Check for Circular References: Review the