Document parking can be used in situations where there are variances in an EDI invoice and when account assignment information is missing for an invoice item. In the case of variances in an EDI invoice, document parking allows the discrepancies to be resolved before final posting. When account assignment information is missing for an invoice item, parking the document permits further data entry to complete the financial information before processing. These scenarios require temporary holding of information until it is corrected or completed, making B and D the correct choices.