Message type: E = Error
Message class:  FDT_WD_INFRA - FDT: Message Class for WD Infrastructure 
Message number: 005
Message text: Some objects are already locked for maintenance
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.
Unfortunately, there isn't any extra information in this error notice.
First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).
Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.
You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.
The SAP error message FDT_WD_INFRA005 indicates that some objects are currently locked for maintenance, which prevents you from making changes or performing certain actions on those objects. This error typically occurs in the context of working with SAP Fiori or Web Dynpro applications, where certain objects (like UI components, data models, etc.) may be locked by other users or processes. Causes: Concurrent Access: Another user or process is currently editing or maintaining the same object. System Lock: The system may have a lock on the object due to a previous transaction that did not complete successfully. Transport Requests: If the object is part of a transport request that is currently being processed, it may be locked. Development Environment: In a development environment, if multiple developers are working on the same object, it can lead to locking issues. Solutions: Check Lock Entries: Use transaction code SM12 to check for lock entries. You can see which user or process is
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
FDT_WD_INFRA004 Object activation failed due to errors
What causes this issue?  You have tried to activate one or more objects. However, the system has determined that at least one of the involved objects ...
FDT_WD_INFRA003 Objects saved and activated
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FDT_WD_INFRA006 Objects copied
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FDT_WD_INFRA007 Transport entries have been written
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.