Ai image rejected for nos and artifact

Check your assets before submitting. Denoise your asset, if noise is the problem, without affecting the overall image quality. Check for artefacts and cure them. 

If you don't see the errors, you can post the image here (as submitted) and we can check it, point out the defects and sometimes even tell you hou to cure those.

If you post the photo that was rejected, we can at least tell you if the image can be corrected using normal noise reduction methods.  That is one of the Achilles heels of AI in my opinion, is the number of artefacts introduced during creation.  The reality is that there may be some AI illustrations that don't be suitable for stock, it's just the nature of the beast.

Cheers!