RSA3 returns dump

Hi,

I have a FM which seems to be correct because it compiles fine and returns the rows I want. But if I chech this one in the RSA3 transaction I get the error:

When calling the function module "MYZFM", one of the parameters

needed according to the interface description was not specified.

This parameter was "E_T_DATA".

Can anybody tell me which is the reason of this error?

And, what happens whether I use variable in the FM Import Tab? How do I pass the values for these variable when running RSA3?

Thanks in advance for your help.

Regards.