RE: Batch Posting Security Task
If you are looking specifically for task(s) list, this is what I found:
To remove access from 'Purchasing Batch Entry' window:
TRX_PURCH_003* - Enter/edit Purchasing batches
To remove access from 'Payables Batch Entry' window:
TRX_PURCH_023* - Enter/edit Payables batches
To remove access from 'Purchasing Series Posting' window:
TRX_PURCH_022* - Purchasing series post
To remove access from 'Receivables Batch Entry' window:
TRX_SALES_022* - Enter/edit Receivables batches
To remove access from 'Sales Batch Entry' window:
TRX_SALES_001* - Enter SOP transactions
TRX_SALES_002* - Enter/edit SOP batches
If you want to allow user to access corresponding Batch Entry window and stop user from posting batches, you can set the same in "Posting Setup" window (Tools >> Setup >> Posting >> Posting), please find below the screen shot.
Next time onwards when user tries to post the batch, system will request to approve the batch before it can be posted and to approve the user should know the password. This is another method of restricting user from posting the batch.
Hope this helps.
Cheers,
Shyam.