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When a topic is created, an incoming event schema is defined. And, when a subscription is created, an outgoing event schema is defined. This article shows you the compatibility between input and output schema that's allowed when creating an event subscription.
Input schema to output schema
The following table shows you the compatibility allowed when creating a subscription.
| Incoming event schema | Outgoing event schema | Supported |
|---|---|---|
| Event Grid schema | Event Grid schema | Yes |
| Cloud Events v1.0 schema | Yes | |
| Custom input schema | No | |
| Cloud Events v1.0 schema | Event Grid schema | No |
| Cloud Events v1.0 schema | Yes | |
| Custom input schema | No | |
| Custom input schema | Event Grid schema | Yes |
| Cloud Events v1.0 schema | Yes | |
| Custom input schema | Yes |
Related content
See the following article to learn how to troubleshoot event subscription validations: Troubleshoot event subscription validations.