Message type: E = Error
Message class:  FKKBW_E - Message for BW Extraction 
Message number: 001
Message text: *************000-050 Reserved for RDBW Extraction***********************
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 FKKBW_E001, which states "*000-050 Reserved for RDBW Extraction***", typically occurs in the context of SAP BW (Business Warehouse) when there is an issue related to the extraction of data from the R/3 system to the BW system. This message indicates that the data extraction process is encountering a reserved range of data that is not currently available for extraction.
Cause: Reserved Data Range: The error message indicates that the data range from 000 to 050 is reserved for RDBW extraction, meaning that the system is trying to access data that is not available or is not meant to be extracted at this time.
Configuration Issues: There may be configuration issues in the data source or the InfoPackage that is responsible for the extraction. Data Source Status: The data source might not be active or properly set up in the BW system. Data Availability: The data that is being requested for extraction
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
FKKBW310 &1 business partner items were selected
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FKKBW309 Final character &1 is locked
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FKKBW_E002 Delta-Extraction for revenue distribution is not active
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FKKBW_E003 Distribution group is only for multi-single select
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.