I am getting above error when I execute below service
/sap/opu/odata/IWPGW/TASKPROCESSING;v=2;mo/TaskCollection/$count/?$filter=Status eq 'READY' or Status eq 'RESERVED' or Status eq 'IN_PROGRESS' or Status eq 'EXECUTED'
in debug I saw that mv_destination is blank, @ line no 51 function "CALL FUNCTION mv_rfc_name" is failing and the same function is working fine when calling as
CALL FUNCTION mv_rfc_name DESTINATION mv_destination
I am missed any configuration, configured system alias with "/IWPGW/BWF" software and RFC destination is also working fine.