If for example, you want to post and check a series of bank statements, you can use a control total to verify that the actual sum of the amounts posted equals the total you calculate in advance. Proceed as follows:
The system automatically calculates the total debits and credits you post.
The system then displays the difference between the control total that you defined in advance and the posted amounts. If they are not equal, you have made a mistake either calculating the control total, or posting the business transactions.
If you have a difference after posting all the required business transactions, double-check the total you expect again. (Add up the individual checks again). If this total is the same as before, check to make sure that you have entered all the documents and also to see whether you have perhaps entered a document twice. You can then enter any missing documents and reverse any documents that have been entered twice. If you do not find any differences with either of these, check the amounts posted for each document.