How To Fix DMU157 - Relationship between &1 and &2 creates a recursion for material &3

SAP Error Message - Details

• Message type: E = Error

• Message class: DMU - Digital Mock Up (DMU)

• Message number: 157

• Message text: Relationship between &1 and &2 creates a recursion for material &3

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMU157 - Relationship between &1 and &2 creates a recursion for material &3 ?

  The SAP error message DMU157 indicates that there is a recursion issue in the relationship between two materials in the context of a material master or a bill of materials (BOM). This typically occurs when a material is defined in such a way that it references itself, either directly or indirectly, through its relationships with other materials. 
  Cause:
  
  Direct Recursion: A material is set to reference itself in its own BOM or in a variant configuration.
  Indirect Recursion: A material references another material that, in turn, references the first material, creating a circular dependency.
  Incorrect Configuration: The relationships between materials may not have been set up correctly, leading to unintended loops.
  
  Solution:
  
  Review Relationships: Check the relationships defined for the materials involved. Look for any direct or indirect references that could create a loop.
  Modify BOM/Configuration: If you find a direct recursion, modify the BOM or configuration to remove the self-reference. If it’s an indirect recursion, adjust the relationships so that they do not create a loop.
  Use Transaction Codes: Utilize transaction codes like CS03 (Display BOM) or CS02 (Change BOM) to review and edit the BOMs associated with the materials.
  Check Material Master Data: Ensure that the material master data does not have incorrect settings that could lead to recursion.
  Testing: After making changes, test the configuration to ensure that the error no longer occurs.
  
  Related Information:
  
  Material Master: The material master contains all the information about a material that is required to manage it throughout its lifecycle.
  Bill of Materials (BOM): A BOM is a list of the components that make up a product, and it defines the relationship between the finished product and its components.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Documentation: Refer to SAP documentation for guidelines on setting up materials and BOMs correctly to avoid recursion issues.
  
  If the problem persists after following these steps, it may be beneficial to consult with an SAP expert or reach out to SAP support for further assistance.