It is not possible to configure the deliver precondition that way.  There is no way to say that the review must be approved by someone with either role A or role B.

Hi Hehui,

Let me try to answer your question.
Currently, RTC doesn't support defining an OR condition for approvers. There is a practice internally used by RTC teams to handle a similar situation. First you grant two people same role and add both people to the approval and have the precondition configured to just require 1 review.

For example, there are iterations where we require a "team lead" approval before a developer can submit code or deliver changes. During those iterations, you can add both Marco (the team lead) and Deb (the PMC member) as Approver, since both Marco and Deb have the team lead role so either of them can review. Then if either one approves the review, he or she deletes the other person from the approval as a way of saying "I'll handle this one".

Do you think that your use case can be handled this way? If not, can you please answer the following questions to help us further understand your needs:

1. What does SME mean?
   
2. If SME is a role, why this use case requires optional approval from either one?
3. What kind of the configuration you expect to see in RTC? ( Can you please describe where you expect to see it fits)
4. How important to you that this use case can be supported in RTC.

And also for your reference, here is a blog about enforcing work item approvals in RTC. To enforce source delivery approvals, go to the Process Configuration in the RTC eclipse client, and add precondition for delivering source under the Operation Behaviors.

Hope to hear you back! Thanks for providing your feedback on using RTC.