Phrase &1 could not be locked

Message type: E = Error

Message class: /SEHS/PH_CM_PHRASE - EHS: General Phrases

Message number: 001

Message text: Phrase &1 could not be locked



What causes this issue?

The phrase &v1& could not be locked. The phrase is currently being
edited or displayed by another user.

Error message extract from SAP system. Copyright SAP SE.