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Error Code Reference
S03-Streaming
S03020

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S03020

Error Code

S03020

Error Message

The leader has not been elected. Try again later. RefId: S03020

Probable Causes

When using the getStreamingLeader function to obtain the leader of HA streaming, this error is raised if the leader is being switched, specifically:

The high-availability group has not elected a leader yet.
Subscription on the high-availability has not be rebuilt yet.

Solutions

Wait for seconds and try again.
Implement a loop to repeatedly attempt the getStreamingLeader function until it succeeds with try-catch.