chengshiwen opened a new pull request #4742:
URL: https://github.com/apache/incubator-dolphinscheduler/pull/4742
## What is the purpose of the pull request
**Set the default Tenant as default or the first exist tenant in save
process**
This closes #4740
## Brief change log
*(for example:)*
- *Check `tenantId` in `dag/_source/udp/udp.vue`*
- *Check `tenantId` in `security/pages/users/_source/createUser.vue`*
## Verify this pull request
This change added tests and can be verified as follows:
*(example:)*
- *Manually verified the change by testing locally.*

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