Message type: E = Error
Message class:  SAAB - Messages for Activatable Assertions and Breakpoints 
Message number: 102
Message text: No authorization for cross-user activation
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 SAAB102, which states "No authorization for cross-user activation," typically occurs when a user attempts to activate a business object or a service that requires authorization to perform actions on behalf of another user. This is often related to the use of cross-user activation in SAP systems, which is a feature that allows one user to activate objects for another user.
Cause: The error is primarily caused by insufficient authorizations in the user's role or profile. Specifically, the user does not have the necessary permissions to perform cross-user activations, which may include: Missing Authorization Objects: The user lacks the required authorization objects related to cross-user activation. Role Configuration: The user's role may not be configured to allow cross-user actions. System Settings: The system may have restrictions or settings that prevent cross-user activations.
Solution: To resolve the SAAB102 error, you can take the following steps: Check User Authorizations: Use transaction code SU53 immediately after the error occurs
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
SAAB101 No authorization to activate checkpoint groups
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
SAAB100 Could not activate
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
SAAB103 Activation table currently locked by user &1
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
SAAB104 Specified expiry time is too far in the future
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.