Watermarks. Make sure you aren't using any third-party camera apps that leave a watermark on the photos.

Blur. Place your document on a flat surface and hold your mobile phone in parallel with the surface when photographing the document. If you're using a laptop or a desktop webcam, make sure that your elbow is in firm contact with the table while holding your document in hand. Don't position your camera too close to the document. To ensure that your camera is in focus, try tapping the screen of your mobile phone to force-focus on a specific object.

Glare. Avoid photographing your ID document under direct light, especially if your ID document has a light-reflecting surface.

Missing info. Photograph your document on a flat surface making sure the serial number, hologram, photo, MRZ, etc. are clearly visible (this may require slightly tilting your ID).

Extraneous objects/persons. Make sure that no one else is visible or partly visible in the photo and that you are not covering any of the data with your fingers.

Graphics software signs. Do not edit the photos.

Poor quality. Use a high-resolution camera and don’t resize the file before uploading it.