I get "BAD REQUEST" and seeing no other hint as to what might be the problem.
I am using code that is exactly like the one shown in the latest image edit documentation.
Both PNGs are 1024x1024 and I have tried having only either transparent or opaque pixels in the mask. The non-mask image is the same as one I have used in a imageVariation request which works.
Any ideas on how to fix this? Or any example PNGs that I can try that should work? Or any idea on how to get more information as to how it is a bad request?
Thanks!