"Compositing Error" is any artifact or impairment induced by or related to poorly implemented VFX/ CGI. Can encompass many different types of errors from color and matte shifts on a character/ object to extraneous artifacts that are not creatively inherent to a scene.
Compositing Errors impact the Content Quality of the Asset. The customer experience is negatively impacted by obvious or poor compositing, which can take them out of a seamless viewing experience.
Significantly noticeable VFX inconsistencies including, but not necessarily limited to, distortion around characters/ objects, characters/ objects appearing slightly transparent, and incomplete or overlapping mattes.
How to Prevent:
Review VFX elements at both reference levels as well as with black levels boosted to expose noticeable compositing.
Likely needs a return to VFX to correct potential improper rendering.
Adjust matte or element to be consistent within frame/ shot.