Error itself is not dangerous but annoying. There are 2 ways to deal with it:
1: In HANA we have a Query cash. A workaround is to change in this Cache: If you go to Tools > User Defined Windows and choose BOY_SBO_QUERYCACHE table
- Find the Row that in the TSQL column have value "SELECT INTERNAL_K AS CODE, U_NAME AS NAME FROM OUSR WHERE Groups <> 99 ORDER BY U_NAME"
- In the HANA column set the HANA SQL to: "SELECT "INTERNAL_K" AS "CODE", "U_NAME" AS "NAME" FROM "OUSR" WHERE "GROUPS" <> 99 ORDER BY "U_NAME"" (Groups being in capital letters in the HANA)... Then after a restart it will work
2: Upgrade to newest version, it is fixed in that.