Customer Payment Journal form, and then click the General tab.In the Approval area, selected the Active check box and selected approve list , but when the document is approved / rejected the payment status field is not changing status like approved / rejected ,it is always showing None , until and unless if the select the option from payment status function.
Payment status field doesn’t have any link with the approvals…it show the check status usually. initially the status will be none…and when u generate a check by going to Functions>Generate payments then your payment status will changes to “Sent”
these statuses are related to Check status like check sent , check received , check rejected and check reuse etc should be selected by the ennd user.only check sent will be automatically changed when check generated.