Hi Linda,
Here comes the reason or solution.
Q1 : General step is FB60 and F110, that is all necessary AP scenario. Corresponding Accounting entry should be something like this.
FB60 F110
Debit: Expense Debit: AP
Credit: AP Credit: Bank or Cash
That equals to following one accounting entry overall
Debit: Expense
Credit: Bank or Cash
Q2: If you post an invoice in FB60, you should find the corresponding item in F-44. Following situation applies in case you could find the item.
1) The item is included in APP or other cross block scenario
2) The item is involved in head and branch relationship.
Q3: This is the same situation as explain in Q2 scenario 1.
For the checking steps, please check following two notes.
152813 Items not displayed for 'Process open items'
136754 F-03, F-32, F-44, F-28 missing open items
In case all the checkpoints are completed without an explanation, please try to run report TFC_COMPARE_VZ to see whether data inconsistency happens.
Hope it clarfiy your concerns.
BR,
Gavin