How To Fix KK166 - Cyclic structures cannot be costed

KK166 - Overview

• Message type: E = Error

• Message class: KK -

• Message number: 166

• Message text: Cyclic structures cannot be costed

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message KK166 - Cyclic structures cannot be costed ?

  The SAP error message KK166, "Cyclic structures cannot be costed," typically occurs in the context of product costing when the system detects a cyclic dependency in the cost structure of a material or product. This means that the cost calculation process has encountered a loop in the bill of materials (BOM) or routing, which prevents it from determining the costs accurately.
  
  Cause:
  
  Cyclic Dependencies: The most common cause of this error is a cyclic reference in the BOM or routing. For example, if material A is dependent on material B for its cost, and material B is also dependent on material A, this creates a cycle that the costing process cannot resolve.
  Incorrect BOM/Routing Configuration: Errors in the configuration of the BOM or routing, such as incorrect component assignments or missing components, can lead to cyclic structures.
  Changes in BOM/Routing: Recent changes to the BOM or routing that have not been properly validated can