Invoice Output Status ERROR

Hi,

I would like to know why my output Status is on error  on my invoice. I would like to print a document en have a document in a mailbox. The partner function that i use is Y3 with the output type YRD0. I don't see it in the SOST...  When i click on "processing log" to see what is wrong i get the following message : no processing log exist" . Where can i analyze my problem to see what cause this problem ?

Thanks In Advance !