The OLAP processor/ Analytic engine checks many scenarios and use cases when a query is executed or generated. For some of these scenarios warning messages of the message classes BRAIN, BRAIN_DEV, RSD_TREX, RSPLS_CR (see also SE91) are raised that highlight possible difficulties when interpreting the results etc.
If you are aware of these consequences and are convinced you can ignore the warning, you can suppress it for the end user via transaction RSRT.
See the following sample screenshot for suppressing the warning message BRAIN 087.
In transaction RSRT, you can use transaction code 'SUPPR_ALL' to maintain messages that can be suppressed for all queries. This maintenance is the same as the maintenance for a single query.
For analyis of the message of the OLAP/analytic engine the Message Handler can be used.