You can register up to 1000 custom papers.
Check the product name, size, and type of your paper before registering it.
Check that the size and type of your paper are compatible with the paper tray that you want to use. Tray compatibility depends on the paper's size and type. For details about the paper sizes and types that can be used, see Recommended Paper Sizes and Types.
When the number of registered custom papers reaches the maximum, you will not be able to register a new custom paper. Delete any unnecessary custom papers from the list, and then try registering again. For details, see Deleting a Custom Paper.