RRX_GRID_CMD_PROCESS issue

Hi Experts,

Fm RRX_GRID_CMD_PROCESS doesn not return any value in KAP system. We were using this Function Module in GRP system to read the BI query data and drilldown the query output.Our custom Fm has stopped returing the data after

the hana migration.

There is no chnage has been made to custom FM. We are getting the

error message : Variables contain invalid values.

Thanks in advance for your help.