When entry isnt made in a/c .you might say that in uneconomic activity but when there's outstanding amount or anything payable we make its entry in the books even if there's s no exchange of cash..
Lets say if A has Told me that he's gonna buy goods worth rs. 1000 then we won't make any entry in the books in advance until it s get paid and goods are exchanged then when he says it becomes accrued for him to me. Yet no entry is passed