@Wendy Li (RD-AS) Welcome to Microsoft Q&A Forum, Thank you for posting your query here!
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Please note that, Azure OpenAI DALL-E does not support image variation and image editing. Currently, we only support the image generations API. The same is mentioned here.
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Once this feature is released, this would be made available in our official documentation.
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I am sharing a couple of the similar Q&A threads on the same ask:
https://learn.microsoft.com/en-us/answers/questions/1532327/does-azure-dall-e-support-image-edits
Hope this helps. If you have any follow-up questions, please let me know. I would be happy to help.
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