How To Fix UPS331 - Function Module &: Serialization Graph is Cyclical (Recursive)

UPS331 - Overview

• Message type: E = Error

• Message class: UPS - ALE Distribution Packet

• Message number: 331

• Message text: Function Module &: Serialization Graph is Cyclical (Recursive)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message UPS331 - Function Module &: Serialization Graph is Cyclical (Recursive) ?

  The SAP error message UPS331, which states "Function Module &: Serialization Graph is Cyclical (Recursive)," typically occurs in the context of function module serialization. This error indicates that there is a cyclical dependency in the serialization graph of the function modules involved, which means that the system has detected a loop in the call hierarchy of function modules.
  
  Cause:
  
  Cyclical Dependencies: The most common cause of this error is that one or more function modules are calling each other in a circular manner. For example, Function Module A calls Function Module B, and Function Module B calls Function Module A, creating a loop.
  Incorrect Configuration: Sometimes, the configuration of the function modules or the way they are designed can lead to unintended recursive calls.
  Data Issues: If the data being processed leads to a situation where the function modules keep calling each other, this can also trigger the error.
  
  
  Solution:
  
  Review Function Module Calls: Check the