How To Fix COM_IL012 - Relationship type & does not allow opposite relationships

SAP Error Message - Details

• Message type: E = Error

• Message class: COM_IL - Object Relationships (Interlinkages)

• Message number: 012

• Message text: Relationship type & does not allow opposite relationships

What causes this issue?

You tried to create a relationship from one object to another object.
However, this relationship cannot be created as the two objects already
have the opposite relationship to each other.

System Response

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

How can this happen?

Using an accessory relationship, product A is to be assigned to product
B.
However, this is not allowed if product B is already assigned to
product A as an accessory.

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 COM_IL012 - Relationship type & does not allow opposite relationships ?

  The SAP error message COM_IL012 indicates that there is an issue with the relationship type in the context of Integrated Logistics (IL) or Configuration Management. Specifically, it means that the relationship type you are trying to use does not allow for opposite relationships. This typically occurs when you are trying to create or modify a relationship between objects (like materials, BOMs, or other entities) in a way that is not permitted by the defined relationship types in the system.
  Cause:
  
  Incorrect Relationship Type: You may be trying to establish a relationship that is not allowed by the configuration of the relationship types in SAP. For example, if you are trying to create a bidirectional relationship where only a unidirectional relationship is allowed.
  Configuration Issues: The relationship types may not be configured correctly in the system, or the specific relationship you are trying to create is not defined to allow opposite relationships.
  Data Integrity Issues: There may be existing relationships that conflict with the new relationship you are trying to create.
  
  Solution:
  
  Check Relationship Type Configuration: Review the configuration of the relationship types in the SAP system. You can do this by navigating to the relevant customizing settings in SPRO (SAP Project Reference Object) and checking the settings for relationship types.
  Use Correct Relationship Type: Ensure that you are using the correct relationship type that allows the kind of relationship you are trying to establish. If you need a bidirectional relationship, make sure that the relationship type supports it.
  Modify Existing Relationships: If there are existing relationships that conflict with the new one, you may need to modify or delete those relationships before creating the new one.
  Consult Documentation: Refer to SAP documentation or help resources for detailed information on the specific relationship types and their configurations.
  Seek Help from SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support or your internal SAP team for assistance.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like CS01, CS02, or CS03 for creating or modifying BOMs, or CST04 for managing relationships.
  Customizing Settings: The relevant customizing settings can usually be found under the following path in SPRO: 
  
  Logistics - General > Master Data > Material Master > Define Relationship Types.
  
  
  Documentation: SAP Help Portal and SAP Notes can provide additional insights and troubleshooting steps related to this error.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.