Dynamic Select query on Dynamic Internal table

Hi All,

I americium penning prime query connected dynamically created interior array utilizing method cl_salv_table_create=>create_dynamic_table.  All the beneath fields are of CHAR90 type.

Where clause of prime connection is formulated utilizing FM 'RH_DYNAMIC_WHERE_BUILD'. It ever gives dump - worth HU01 is not allowed erstwhile dynamic  SELECT connection is executed. I tried keeping 'Dist Channel' archetypal and yet aforesaid dump.  Can idiosyncratic assistance maine to cognize what is the issue