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Update Plan Entry fails

There may be similar post on this topic, but my issue seems unique as it works sometimes and 98% of the time fails.

There is no code change made. So this is the error I get while running my automation tests.
Caused by: com.gurock.testrail.APIException: TestRail API returned HTTP 400(“Field :entries.runs uses an invalid combination of configurations (use one from each group).”)
This error arises from update_plan_entry.

Its been more than a month that i have this issue