Message type: E = Error
Message class: SD - Online doc., terminology, translation, help
Message number: 004
Message text: Document cannot be locked for technical reasons
At the moment no further objects can be locked for editing.
You cannot edit the document you have selected now.
Try calling the module again later.
Error message extract from SAP system. Copyright SAP SE.
SD003 You are already editing this document
Self-Explanatory Message Since SAP believes that this specific error message is ...
SD002 Document is already being edited
What causes this issue? You have called a documentation module that is currentl...
SD005 Function cannot be executed
Self-Explanatory Message Since SAP believes that this specific error message is ...
SD006 This function is not supported for translation
Self-Explanatory Message Since SAP believes that this specific error message is ...
SAP messages fall into 3 different categories: Error messages
(message type = E), Warnings (W) or Informational (I) messages.
An error message will prevent you from continuing your work - it is a hard stop and you need to fix the error before you can proceed. A warning message will stop your work, however, you can then bypass the warning by pressing the Enter key on your keyboard. That said, it is still good practice to investigate the cause of the warning message and address it. An information message will not stop your work and is truly just for informational purposes.
Click on this link to search all SAP messages.