Photo Attachment Size Limit
The system is configured with a max resolution for attached images. If a user attempts to attach an image that exceeds these limits then they are presented with options for what to do. The specific options presented to a user depends on what rights they have.

The first option is to override the limit and attach the image anyway. This allows the user, on a case-by-case basis to ignore the resolution limit. This is useful for cases when a user occasionally needs to attach a very high resolution image. This option is only available to users with the IGNORE.ATT.LIMIT right.
The second option id for the system to resize the image and attach it. This will preserve the scale of the image, but make it fit within the resolution limit that is configured in the system. This option is only available to users with the ATTACHMENT.IMG.RESIZ right. Note: At this time image metadata (e.g. camera model, etc.) is not preserved by the resize operation.
The final option is to not attach the image. This option is always available to users.
More information about system rights is available in the User Rights section of the Admin documentation. Instructions on setting the max resolution is also included in the Admin documentation.