Hello,
FB03 - you have so called entry view (look on BSEG table) and GL view (look on FAGLFLEXA table)
So, when you take a look on the document, write down the "key"
company code
document number
and year
Use transaction: SE16(n) and enter table name FAGLFLEXA and enter:
Ledger: your leading ledger on the system.
Do you find the entry in FAGLFLEXA table?
thank you
all the best erwin