3075686 - Cannot create an index on table '', because this table does not exist in database % - SAP ASE

• cross-platform migration from Solaris (ASE 16.0 SP03 PL01 ) to RHEL 8.4 (16.0 SP04 GA)
• Sometimes a stored procedure produces the following errors

  Msg 1906, Level 16, State 1:
  Server 'servername', Procedure 'procname', Line 25:
  Cannot create an index on table '', because this table does not exist in database 'db_owfs'.
  Msg 1906, Level 16, State 1:
  Server 'servername', Procedure 'procname', Line 27:
  Cannot create an index on table '', because this table does not exist in database 'db_owfs'.
  Msg 21, Level 20, State 1:
  Server 'servername', Procedure 'procname', Line 30:
  WARNING - Fatal Error 941 occurred at Jul  7 2021  7:59AM.  Please note the error and time, and contact a user with System Administrator (SA) authorization.
  ASE is terminating this process

• the above errors also trigger a stacktrace in the ASE log :

        lasterror = 941 preverror = 1906 transtate = 2
        terminate_process
        hdl_default
        s_handle
        exc__raise
        exc_raise 
        closedb        
        s_decrypt_keys   
        s_execute      
        sequencer     
        execproc        
        s_execute

SAP Adaptive Server Enterprise (ASE) 16.0

KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Problem