Apple Wallet extension card art requirement

Dears,

We are developing an apple wallet extension. In the Non-ui extension, in the getPaymentPassEntry overriden function we have to return an object such as:

``PKIssuerProvisioningExtensionPaymentPassEntry(identifier: identifier,
                                                                 title: label,
                                                                 art: getEntryArt(image: uiImage),
                                                                 addRequestConfiguration: requestConfig)!``

What is not clear are the requirements for this "art" parameter. Somewhere in the FAQ it says that the art has to be an image of 1536 x 969 resolution, <4 MB, squared corners, no chip contacts, and so forth) but we set there images of any size and the extension displays them without any problem.

Are those requirements (1536 x 969 resolution, and so on) only for the images that are displayed in the wallet only after the card has been added? In this case, are those images coming from the PNO directly and not coming from the function above which is in the wallet extension?

Thanks,