How To Fix VCH_LL105 - Procedure chain with mutual dependencies found in BOM &1 position &2

SAP Error Message - Details

• Message type: E = Error

• Message class: VCH_LL - Messages for package VCH_LL

• Message number: 105

• Message text: Procedure chain with mutual dependencies found in BOM &1 position &2

What causes this issue?

The bill of material with number &1<(>,<)> position &2 has multiple
object dependencies of the type procedure assigned. These procedures
have mutual dependencies; this means that a value that is calculated by
a procedure is used in a later procedure. Since SAP HANA variant
configuration processes all procedures in parallel, these
mutually-dependent procedure chains cannot be calculated correctly.

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

System Response

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 VCH_LL105 - Procedure chain with mutual dependencies found in BOM &1 position &2 ?

  The SAP error message VCH_LL105 indicates that there is a circular dependency in the Bill of Materials (BOM) for a specific material. This means that the BOM contains components that reference each other in a way that creates a loop, making it impossible for the system to resolve the dependencies.
  Cause:
  
  Circular Dependencies: The most common cause of this error is that one or more components in the BOM reference each other in a circular manner. For example, Component A may reference Component B, and Component B may reference Component A.
  Incorrect BOM Structure: The BOM may have been incorrectly structured or maintained, leading to unintended dependencies.
  Data Entry Errors: Manual errors during BOM creation or modification can lead to such dependencies.
  
  Solution:
  
  Review BOM Structure: Check the BOM for the material specified in the error message. Look for any components that reference each other in a circular manner.
  Identify Circular References: Use transaction codes like CS03 (Display BOM) or CS02 (Change BOM) to analyze the BOM structure. You may need to trace the dependencies of each component to identify the circular reference.
  Correct the BOM: Once you identify the components involved in the circular dependency, modify the BOM to eliminate the circular reference. This may involve removing or changing the references between components.
  Test Changes: After making changes, test the BOM to ensure that the error no longer occurs and that the BOM functions as intended.
  Consult Documentation: If you are unsure about how to resolve the issue, refer to SAP documentation or consult with a colleague who has experience with BOM management in SAP.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CS01 (Create BOM), CS02 (Change BOM), CS03 (Display BOM), and CS11 (Display BOM for a material).
  BOM Types: Understand the different types of BOMs (e.g., single-level, multi-level) and how they can affect dependencies.
  SAP Notes: Check for any SAP Notes related to BOM management and circular dependencies, as there may be specific patches or updates that address known issues.
  Training: Consider training or workshops on BOM management in SAP to better understand how to structure BOMs and avoid such issues in the future.
  
  By following these steps, you should be able to resolve the VCH_LL105 error and ensure that your BOM is correctly structured without circular dependencies.