How To Fix CRM_SERVICE_OS012 - Exactly one main object allowed/necessary for each reference object list

SAP Error Message - Details

• Message type: E = Error

• Message class: CRM_SERVICE_OS - CRM Service: Subject Reference Object

• Message number: 012

• Message text: Exactly one main object allowed/necessary for each reference object list

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CRM_SERVICE_OS012 - Exactly one main object allowed/necessary for each reference object list ?

  The SAP error message CRM_SERVICE_OS012, which states "Exactly one main object allowed/necessary for each reference object list," typically occurs in the context of SAP CRM (Customer Relationship Management) when you are trying to create or modify a service order or a related object. This error indicates that the system expects a single main object to be defined for the reference object list, but it has detected either none or multiple main objects.
  
  Cause:
  
  Multiple Main Objects: You may have inadvertently selected multiple main objects when the system expects only one.
  Missing Main Object: The main object may not have been defined or selected, leading to the error.
  
  Configuration Issues: There could be issues with the configuration of the service order or the related objects in the system.
  Data Integrity Issues: There may be inconsistencies in the data being processed, such as incorrect references or relationships between objects.
  
  
  Solution:
  
  Check Object Selection: Review the objects you have selected