Unable to generate credit advice

Hi,

I am using R7.

I am getting same EB.ACTIVITY.CODE for two different versions due to which I am unable to generate customized CREDIT ADVICE for both the versions.I am getting an error of duplicate when I am going to EB.ADVICES application with Activity Code = LC-3402,and attaching the two advices with Message Class = Credit Advice, Message Type = 910,Mapping Key = 910.LC.81, Print Format = 28.

Even if I change the Print Format, system is not generating both credit advices (one for FBP and one for DRAWINGS) in their respective versions on Credit Transaction.

Please suggest.

Note:Find the attached image for a clear picture.

Regards,
Angel.