External Data Transfer- KCLJ

Hello,

When i executing the KCLJ- external Data transfer , the file executed with  the error."The field "AKTYP"is not defined in DDIC.

But I have configured Sender structure with relevent field except "AKTYP"-Activity category, Transfer rules are also defined.

while am trying to add AKTYP field in the sender structure the follwoing error was getting:

"The field "AKTYP"is not defined in DDIC. "

Thanks & Regards

Kotta