Converting Binary data to PDF spool.
Overview and Procedure
Try to use report RSTXPDFT5 (or possibly a file printer, see note 576973) to download the spool to a local file. From there, the PDF can be displayed and printed.
Note # 1481367 - PDF converter: Saving PDF data in binary spool request
=> "4. Use the report RSTXPDFT5 to download the content of the binary spool request that is generated by this"
Also check if the note 1855522 provides the solution to your problem:
# 1855522 - Creating a PDF spool request with one part (not several)