How To Fix OIUGT067 - Multiple existing groups detected, please only have a maximum of 1

OIUGT067 - Overview

• Message type: E = Error

• Message class: OIUGT - Graphical Tool Message Class

• Message number: 067

• Message text: Multiple existing groups detected, please only have a maximum of 1

Diagnosis
You tried to include an existing group within a new group. When
grouping, however, you cannot include an existing group within a new
group. A group must consist of separate entities.
What To Do
If you want to include entities that are already part of an existing
group in a new group, ungroup the existing group and then include those
entities in the new group.

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

Error message extract from SAP system. Copyright SAP SE.

OIUGT067 - Details

• The SAP error message OIUGT067, which states "Multiple existing groups detected, please only have a maximum of 1," typically occurs in the context of SAP's Oil and Gas (O&G) module, particularly when dealing with master data or group assignments. This error indicates that the system has detected multiple groups assigned to a particular entity (like a well, production unit, etc.) when it expects only one group to be assigned.
  
  Cause:
  
  Data Entry Error: The most common cause is that multiple groups have been assigned to a single entity in the system, which violates the business rules set in the configuration.
  
  Configuration Issues: There may be a misconfiguration in the system settings that allows for multiple group assignments when only one is permitted.
  Data Migration Issues: If data was migrated from another system, it’s possible that the migration process did not correctly handle group assignments, leading to duplicates.
  User Error: Users may have inadvertently assigned multiple