In some places, you will see a Document Date – a date taken from the EDI data itself.
Errors Page
Click Errors, click on an Error Code, and click a Document ID. You will see two dates for that document:
§ Transmission Date one is the date and time from the detail results file.
§ Document Date one is the date and time from a value within the transaction set (such as the BHT-04 and BHT-05 for 837 documents):
Transmissions Page
Click Transmissions and then click a date. At the bottom, open a transmission by clicking its plus sign.
The Document Date is from the EDI data itself:
The location of the document date varies by transaction. See List of Document Dates by Transaction in ApplicationDocTables.pdf.