# StartBpmnInstance
## Properties
Name | Type | Description | Notes
------------ | ------------- | ------------- | -------------
**flow_input** | Option<[**std::collections::HashMap<String, serde_json::Value>**](serde_json::Value.md)> | Start variables for this instance, addressed by the process as `flow_input.<name>`. Shape them after the flow's `schema`. | [optional]
**process_id** | Option<**String**> | Which `<process>` of the document to start (#1232) -- Flowable's `startProcessInstanceByKey`. Omit for the flow's MAIN process: the first `isExecutable` one in document order, which is what the Run button sends and what every single-process document has exactly one of. Naming a process the deployed version does not register -- absent, or `isExecutable=\"false\"`, for which Flowable creates no definition either -- is a 400 listing the keys it does register, never a silent fall-back to the main process. | [optional]
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