Hi,
call transaction se16 with table PTR_ROT_AWKEY with a testpersonel number
You will find two different AWLIN lines.
Check the RUNID (posting run number)
Call transaction PRRW with the RUNID. Doubleclick the result. Select Button FI/CO Documents
select from the pop.up the 'Accounting Document'. here you will find the Number of Line Item Within the Accounting Document.
PTRV_DOC_IT refers also to the accounting document (comapre HKONT and LIFNR) with the accounts on the document.
Hope this helps further
BR
Klaus