Facing a problem with RFC Call receiver error while importing the table sap sandbox

Hi All,

I am trying to import a table from sap sand box . while importing it is showing below error..

RFC CallReceive error <Function DDIF_FIELDINFO_GET: RFC_ABAP_EXCEPTION-(Exception_Key: NOT_FOUND, No active nametab exists for /BIC/OHZ_ISP_SCX)[SAP NWRFC 720][SAP Partner 731 ][SCX][ics106046124][APOBODS][4103]>.

Please suggest me how can i overcome this problem ??