ORA-24374

I have a PS app engine which has the following code in a Peoplecode action (using PT 8.53)

Local number &l6_lvl, &l5_lvl, &l4_lvl, &l3_lvl, &l2_lvl;

Local string &hr_dept, &hr_dept_descr, &range_from, &range_to, &l6_node_id, &l6_descr, &l5_desc, &l5_descr, &l4_desc, &l4_descr, &l3_desc, &l3_descr, &l2_desc, &l2_descr;

Local SQL &schSql;

&schSql = GetSQL(SQL.PAY_ALMN_SCHOOL, NC_PAY_ALMN_AET.DEPTID, &hr_dept, &hr_dept_descr, &range_from, &range_to, &l6_lvl, &l6_node_id, &l6_descr, &l5_lvl, &l5_desc, &l5_descr, &l4_lvl, &l4_desc, &l4_descr, &l3_lvl, &l3_desc, &l3_descr, &l2_lvl, &l2_desc, &l2_descr);