Equipment &1 is already locked by user &2

Message type: E = Error

Message class: IS - Equipment management

Message number: 813

Message text: Equipment &1 is already locked by user &2



What causes this issue?

INCLUDE 'SPERREN1' OBJECT DOKU ID TX LANGUAGE E


System Response

INCLUDE 'SPERREN2' OBJECT DOKU ID TX LANGUAGE E


How to fix this error?

INCLUDE 'SPERREN3' OBJECT DOKU ID TX LANGUAGE E

Error message extract from SAP system. Copyright SAP SE.