SEPA FIRST: Event 601, select only first docmeunt per mandate

Hi Expert,

When I'm running FIRST transaction I can exlud Item in the event 601 by doing:  t_0601-xaktp_0601 = ' '

But in this event you have only one transaction at a time.

When I process the first document, I get hist BP and the corresponding mandate too.

When I process the second, i would like to check if this current doc has alrady been processed for the same mandate.

Situation is: event 601 is called for every document, so the variables where I store documents and corresponding BP & Mandates are lost.

How can I trace what are the mandates already processed ?

Thanks in advance,

thierno