Message type: E = Error
Message class:  ESH_FL_MSG - File Processing 
Message number: 128
Message text: File property ID '&1' deleted
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 ESH_FL_MSG128, which states "File property ID '&1' deleted," typically occurs in the context of the SAP Enterprise Search or SAP Search and Classification (TREX) systems. This error indicates that a specific file property ID, which is expected to be present in the system, has been deleted or is no longer available.
Cause: Deletion of File Property: The most common cause of this error is that a file property that was previously defined in the system has been deleted. This could happen due to changes in the configuration or updates to the system. Configuration Changes: Changes in the configuration of the search system or the underlying data model may lead to the removal of certain properties. Data Consistency Issues: There may be inconsistencies in the data or metadata that the search system relies on, leading to the inability to find the specified file property.
Solution: Check Configuration: Review the configuration settings in the
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
ESH_FL_MSG127 File property ID '&1' added
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
ESH_FL_MSG126 File property ID is initial
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
ESH_FL_MSG129 File property ID '&1' displaced to position &2
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
ESH_FL_MSG130 All file properties deleted
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.