Manual Creation of Payment Matching

If we are creating a payment matching manually and we have unpaid and unmatched documents but no documents are suggested, this is most likely caused by the fact that they are posted to different accounts than the cash or bank document. For example, if we want to post a cash document to 501/211, but the invoice we want to match has account 321, the system will not allow us to proceed until we change 501 to 321. Such a document cannot be settled via the "Match" button either — an error message will appear indicating that both documents have different accounts.