While processing MB51 Transation system is giving run time Error.

Dear MM Team,

While processing T code MB51 system getting data, if i clicking detail list in MB51 system has given below dump message.

A RAISE statement in the program "CL_GUI_ALV_GRID===============CP" raised the

exception

condition "NO_VALID_DOCUMENT".

Kindly suggest me how to rectify the above problem.

Regards

Venkey.