I'm using a paging grid to add the data to the same on clink of a button aft

I'm using a paging grid to add the data to the same on clink of a button after selecting the required item from the dropdown list,in the sail design interface the code is working good, but when the same is called to tempo, the exception is returning as "[label=“Assigned Countries”] has an invalid value for “identifiers”. None of the values in “identifiers” can be null." Though I have a null check conditions on all the elements of the grid..

Can any one suggest me the way to go..

Best,
Deepan.

OriginalPostID-150244

OriginalPostID-150244