Message type: E = Error
Message class:  SAAB - Messages for Activatable Assertions and Breakpoints 
Message number: 216
Message text: The corresponding user must be specified for local activation variants
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 SAAB216 indicates that there is an issue with the activation of a variant in the SAP system. Specifically, it suggests that a corresponding user must be specified for local activation variants. This error typically arises in the context of using variants in transaction codes or reports where user-specific settings are required.
Cause: The error occurs when: A local activation variant is being used, but the system does not have a user specified for that variant. The variant is set up in such a way that it requires a specific user to be associated with it, but that user is not defined in the system or is not linked to the variant.
Solution: To resolve the SAAB216 error, you can follow these steps: Check Variant Settings: Go to the transaction where the variant is being used (e.g., SE38 for ABAP programs). Open the variant in question and check its settings. Ensure that the user field is filled
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
SAAB215 Activation variant &1 not yet saved
What causes this issue?  Before you execute a variant, you must save the changes.System Response  Error. Variant not executed.How to fix this error?  ...
SAAB214 Checkpoint group &1 cannot be transported
What causes this issue?  Since you want to add the checkpoint group/ &V1& to a transportable variant, it must also be transportable.System Res...
SAAB217 Activation variant &1 cannot be modified or created locally
What causes this issue?  Variant &V1& is a special and, by definition, global variant of the transaction. It contains all the checkpoint group...
SAAB218 User cannot be specified for global variants
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.