Output a note to the log if the ANYDTDTE informat encountered an ambiguous date. For example, 02/03/2026. For the rest of the world (I think) this is 02 March 2026 (CE). But for the USA this is February 03. As a UK user a colleague of mine had problems using it and eventually tracked it down to having to change the datestyle option as our installation has this set to MDY (I'm sure our admins could update our installation package. But...)
I'm sure the datestyle option must alter the behaviour in other scenarios as well. Where a note would be useful. Something like:
NOTE: <whatever informat / process> encountered an ambiguous date and used the <MDY or DMY as applicable> format. If you need to modify this, change your DATESTYLE option.
