|The "UHL1 Date" in the BACS Standard 18 output will be VALIDATED & AMENDED by the BACS software based on the following four conditions :
Format check - If the date is not in the format bYYDDD, it will be overridden with the current BACS processing date.
- Past processing day check - It must be the same as or later than the current BACS processing day, if not, UHL1 date will be overridden with the current BACS
Valid processing day check - Date must be a valid processing day i.e., must not be a Saturday, Sunday, English bank/public holiday or other nonprocessing day.
- Processing window (31 days) - Date must be no later than 31 days after the current processing day.