Message type: E = Error
Message class:  PPH_FCDM - Forecast Demand Messages 
Message number: 005
Message text: PIRs for material &1 already locked
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 PPH_FCDM005 indicates that Purchase Information Records (PIRs) for a specific material are already locked. This typically occurs when another user or process is currently editing or has locked the PIR for that material, preventing you from making changes.
Cause: Concurrent Access: Another user is currently editing the PIR for the same material. Background Jobs: A background job or process is locking the PIR for updates or processing. Transaction Lock: The transaction you are trying to perform is attempting to access a locked record.
Solution: Check Lock Entries: Use transaction code SM12 to check for lock entries. You can search for locks related to the specific material and user. If you find a lock that is no longer needed, you can delete it (if you have the necessary authorizations). Wait and Retry: If another user is editing the PIR, you may need to wait until they finish and release the lock. You can communicate
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
PPH_FCDM004 Withdrawal quantity is higher than desired quantity for period date &1
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
PPH_FCDM003 Inconsistent data in URI: Request cannot be processed
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
PPH_FCDM006 Some materials could not be locked: Action not executed for these matls
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
PPH_FCDM007 Deletion of PIRs failed
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.