I don’t think this is possible. Workflow can capture an incoming odata call and might be able to manipulate it’s response. If that response is consumed by client framework, there’s a possibility to change what client framework displays. IF you can answer these 2 questions as YES, then populating the supplier might be possible.
1. Does the dropdown selection change initiates an OData call?
2. Is the response of above call is consumed by Client framework, specifically to load the supplier dropdown data?
Hi @Buddhi Gunasekara
Answers to question 1 - Yes
Answer to question 2 - No.
Then I believe this cannot be fulfilled.