How To Fix FRMLMSC223 - Material &1 is part of a multilevel loop

SAP Error Message - Details

• Message type: E = Error

• Message class: FRMLMSC - RMS-FRM: Miscellaneous Messages for Formula

• Message number: 223

• Message text: Material &1 is part of a multilevel loop

What causes this issue?

The system also takes loops over multiple levels into account when
exploding a formula. Material &V1& is a constituent of such a
multilevel loop. This means that material &V1& is the input material of
a formula whose output materials are indirectly input materials of
another formula that contains material &V1& as an output material.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FRMLMSC223 - Material &1 is part of a multilevel loop ?

  The SAP error message FRMLMSC223 indicates that there is a multilevel loop involving the specified material in the context of a bill of materials (BOM) or a production process. This typically occurs when there are circular references in the BOM or routing, which can lead to infinite loops during calculations or processing.
  Cause:
  
  Circular References: The most common cause of this error is that the material is part of a circular reference in the BOM. For example, if Material A is a component of Material B, and Material B is also a component of Material A, this creates a loop.
  Incorrect BOM Structure: The BOM may have been incorrectly structured, leading to unintended dependencies between materials.
  Routing Issues: Similar issues can arise in routing where operations reference each other in a circular manner.
  
  Solution:
  
  
  Review BOM Structure: Check the BOM for the material in question. Look for any circular references and correct them. You can do this by:
  
  Using transaction codes like CS03 (Display BOM) to view the BOM structure.
  Analyzing the components to ensure that no material is referencing itself directly or indirectly.
  
  
  
  Check Routing: If the error is related to routing, review the routing for the material to ensure that there are no circular dependencies among operations.
  
  
  Use SAP Tools: Utilize SAP tools or reports that can help identify circular references. For example, you can use the "Where-Used List" functionality to trace the dependencies of the materials.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on how to structure BOMs and routings to avoid such issues.
  
  
  Testing: After making changes, test the BOM or routing to ensure that the error no longer occurs.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CS01 (Create BOM), CS02 (Change BOM), CS03 (Display BOM), and CA03 (Display Routing).
  SAP Notes: Check for any SAP Notes related to this error message for additional insights or patches that may address known issues.
  Training: Consider training or resources on BOM and routing management in SAP to better understand how to avoid these issues in the future.
  
  By following these steps, you should be able to resolve the FRMLMSC223 error and prevent it from occurring in the future.