anyone know whether it’s possible to print a supplier item return to advanced PDF (or any form for that matter)?

With scripting, printing vendor bills, rmas, and credits is possible. Outside of that I don't believe it is.

You could also create a saved search and an advanced pdf template from it. You can craft a custom field formula that works as a print link, let me know tomorrow if you want more details

would love to see that in action @michoel!

So basically 1. create a saved transaction search, make sure you have Internal Id in the Available Filters 2. create an Advanced PDF template using the search 3. create a custom transaction body field, type inline html, store value = F, default value =

<a href="#" onclick="window.open('/app/common/search/searchresults.csv?printType=SEARCH&l=T&e=T&id=[replace with saved search id from step 1]&searchid=[replace with saved search id from step 1]&dle=&pdf=&size=200&twbx=F&csv=Export&printtemplate=[replace with template id from step 2]&Transaction_INTERNALID=' + nlapiGetRecordId())">Print Record</a>

wow, legendary thank you @michoel