IDAETERR47 - DATE: day invalid

Reason:

A date function found a day specification is invalid because:

A non-digit was found in a DD specification
Input date contains two different day specifications (any non-equal combinations of D and DD)
Input date contains a DDD specification (day 1-366) but no valid year specification, so the day of the month cannot be determined

Action:

Review the input-date parameter of the date function in error.