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I can match the requestUri in the custom rules but not in exclusions. in custom rules I can't select rules of the policy as I can in exclusions therefore, if I match the path and allow it will be for all rules not for the ones I want to exclude
Yes, you're correct. Please share your feedback in the form.
Is it possible to exclude certain WAF rules for a particular url path?
This is not possible using exclusion in the WAF. If you would like this feature, please share your feedback in the form.
If you wish you may upvote the feedback in the below forum requesting this feature. All the feedback you share in these forums will be monitored and reviewed by the Microsoft engineering teams responsible for building Azure.
https://feedback.azure.com/d365community/idea/60cfcfda-502f-ed11-a81b-000d3ae3db6e
If above is unclear and/or you are unsure about something add a comment below.
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Regards,
Rohith