Message type: E = Error
Message class:  RSO_RES_QMSGS - Messages directly related to Query Designer. 
Message number: 101
Message text: Reusable component selected for target does not exist: &1
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 RSO_RES_QMSGS101 indicates that a reusable component selected for a target does not exist. This typically occurs in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence) when dealing with queries, data sources, or other reusable components.
Cause: The error can be caused by several factors, including: Missing Component: The reusable component (like a query, InfoObject, or data source) that you are trying to use has been deleted or does not exist in the system. Incorrect Naming: There may be a typo or incorrect naming in the component reference. Transport Issues: If the component was recently transported from another system, it may not have been transported correctly or completely. Authorization Issues: The user may not have the necessary authorizations to access the component. Versioning Issues: The component may exist in a different version or client.
Solution: To resolve the error, you can take the following steps: Verify Existence: Check if the reusable component exists
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
RSO_RES_QMSGS100 Existing target component cannot be overwritten: &1
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
RSO_RES_QMSGS099 No mapping details available for entered target: &1
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
RSO_RES_QMSGS102 Type of source and target object must be identical: &1 &2
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
RSO_RES_QMSGS103 Could not read component details.
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.