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Impossible to create two similar "One-way relationship" attributes but with different key attributes.
TL;DR
The user is asking if their issue, which involves a Many To Many relationship, is related to another issue mentioned in a GitHub thread. The second message explains that it is impossible to create two similar "One-way relationship" attributes with different key attributes. No solution is provided in the thread. 
Does your issue same of this?
https://github.com/appwrite/appwrite/issues/6281#issuecomment-1793678699
My issue is Many To Many
Yes
Then this one might be the related issue: https://github.com/appwrite/appwrite/issues/6887
