Recently I've bumped with an issue with the FindCompletedItems and FindItemsByProduct operations.
I'm using the ProductId field in order to get the requested product. So for example, I'm setting the product id type to "UPC" and the value to the requested upc (a truly valid one).
It used to work, but now I'm always getting the "Invalid product ID value" error message - error code 41.
I also tried to execute the same request via the "API Test Tool" with no success.
For example (taken from the API Test Toole):
<?xml version="1.0" encoding="utf-8"?>
Again, it worked as expected last week and now it isn't.
Anyone bumped with this issue? Is there some errors in the ebay servers? (Although I didn't see any notification about it)
Thanks in advance,