On my purchase order entry screen, there’s a field at line level under items called ‘Project’.

Searching for this field in the transaction form, it appears to be the customer name. In sandbox this is a search, you click into it and a pop-up appears to search for the customer. In production it seems to have changed to a drop-down, which doesn’t give you the option to search.

I’m guessing this is a setting that’s changed somewhere but i’ve no idea where to look – it doesn’t appear to be a custom field, and i’ve looked for checkboxes in the transaction form but to no avail.