Hi Orianne,

For the customers not showing the list of posted invoices, are they defined as 'Open Item' or 'Balance Forward' customer types? This can be found on the Accounting tab, with the first field called Account Type. I believe only 'Open Item' customers will show specific invoices to pay, and 'Balance Forward' customers will only allow entering a payment amount which you cannot specifically apply to invoices. What you have described is the behaviour for customers with a 'Balance Forward' type. If this is your situation, then it would always happen for those particular customer(s) and not sporadically. To fix this, you would have to find a time when there are no open batches, make a backup of your data, and edit the customer(s) to be 'Open Item' type. A Data Integrity Check should be done when you are finished.

The DocStorage DIC error is likely minor and would not have any impact over this situation.Though it's reasonable to rebuild that error when time permits.