Generate spool request number after printing DMS documents

Hello !

I have a requirement like below.

PDF documents are stored in DMS at Batch Master Level in MSC3N.

Now retrieve the PDF file output and print it.

For retrieveing PDF and printing I already done code changes , now i want to generate spool request in SP01 after printing .

Multiple PDF attachments need to merge as one PDF attachment and sending as mail.

can anyone help out me in this quite urgent.

Helpful answer will be rewarded

Thanks in Advance.