New Accounts Manager Joined,never set with you to see the work process. in closing time, The Manager told you, you are not professional Accountant.

The manager thinks you have no idea of periodic closing. AR and AP are two most important elements of business. AR is related to sales revenue and customer balances, AP is related to cost, creditors balances and also inventory. If you are an AP accountant you must record the invoices on time and post all the JV in time. If you fail to do so in time then cost will not be correct also creditors balances and inventory. There is a concept of matching principal in accounting where you match the revenue with the cost if AR and AP do not perform their functions properly then how can you match the revenue with its respective cost.