ADBC Insert Query not working

Hi Experts,

I am trying to insert records in database table, but its failing.

When I debug the statement, the CALL C_DB_FUNCTION returns sy-subrc 12.

Here is my code for insertion :

Create the SQL statement object

  lo_sql_statement = lo_sql_connection->create_statement( ).

* To insert the records from internal table

  lo_sql_statement->set_param_table( REF #( lt_materialid ) ).

* Prepare the SQL Statement

  CONCATENATE 'INSERT INTO' c_tab_name 'VALUES( ?,? )' INTO

                   lv_sql_statement SEPARATED BY space.   " #EC NOTEXT

* Execute the SQL statement

   TRY .

    lv_rows_processed = lo_sql_statement->execute_update( lv_sql_statement ).

   CATCH cx_root INTO lx_root .

EXECUTE_UPDATE Method is not working.

Any reviews in this??

Thanks,

Sumit