How To Fix UGMD311 - &1 is already used in hierarchies; assignment not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: UGMD - FIN Master Data: Messages

• Message number: 311

• Message text: &1 is already used in hierarchies; assignment not possible

What causes this issue?

Only those characteristic values can be assigned to another
characteristic as delta nodes that are not used anywhere else in
hierarchies. But &v1& is used since period &v3& in hierarchies of
version &v4& below node &v2&.

System Response

&v1& cannot be used at present as a delta node.

How to fix this error?

Assign another delta node.
Or delete all usages of this characterisitc value in hierarchies.
Subsequently this value can be used as a delta node.

Procedure for System Administrators

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.