# Prepare Study VOB Candidate

> Perform Prepare Study VOB Candidate through GenHealth - Eligibility.

Source: [https://genhealth.ai/docs/workflows/integrations/gen-health-eligibility/eligibility_prepare_study_vob_candidate](https://genhealth.ai/docs/workflows/integrations/gen-health-eligibility/eligibility_prepare_study_vob_candidate)

Integration: [GenHealth - Eligibility](https://genhealth.ai/docs/workflows/integrations/gen-health-eligibility.md)

- Handler: `eligibility_prepare_study_vob_candidate`

## Use in a workflow

Copy this discovered node config, fill params from the input contract, and validate the complete graph. Integration results are available as {{node_id.default.field}}. Check business success before dependent writes; completion alone does not prove business success.

```json

{
  "_group": "GenHealth - Eligibility",
  "params": {
    "candidate_contract": "study"
  },
  "handler": "eligibility_prepare_study_vob_candidate"
}

```

[Action contracts](https://genhealth.ai/docs/workflows/action-contracts.md) · [Run recovery](https://genhealth.ai/docs/workflows/operations.md)

## Inputs

- `item` — Item (expression, required)
  Required literal value or workflow expression.
- `detail` — Detail (expression, required)
  Required literal value or workflow expression.
- `insurance` — Insurance (expression, required)
  Required literal value or workflow expression.
- `coverage_as_of_date` — Coverage As Of Date (expression, required)
  Required literal value or workflow expression.
- `candidate_contract` — Candidate Contract (text)
  Optional text value.
  Default: `"study"`

## Outputs

- `success` — Success
- `status` — Status
- `ready` — Ready
- `reason_codes` — Reason Codes
- `candidate` — Candidate
- `error` — Error

Output schema completeness: `best_effort_declared`

## Safety

- External effect: `write`
- Confirmation recommended: no
- Retry safe: no
- Dry run supported: no

## Schemas

These schemas are first-pass authoring guidance. Runtime validation remains authoritative.

### Input schema

```json
{
  "type": "object",
  "required": [
    "item",
    "detail",
    "insurance",
    "coverage_as_of_date"
  ],
  "properties": {
    "item": {
      "description": "Required literal value or workflow expression.",
      "x-workflow-field-type": "expression"
    },
    "detail": {
      "description": "Required literal value or workflow expression.",
      "x-workflow-field-type": "expression"
    },
    "insurance": {
      "description": "Required literal value or workflow expression.",
      "x-workflow-field-type": "expression"
    },
    "candidate_contract": {
      "type": "string",
      "default": "study",
      "description": "Optional text value.",
      "x-workflow-field-type": "text"
    },
    "coverage_as_of_date": {
      "description": "Required literal value or workflow expression.",
      "x-workflow-field-type": "expression"
    }
  },
  "additionalProperties": false
}
```

### Output schema

```json
{
  "type": "object",
  "properties": {
    "error": {},
    "ready": {},
    "status": {},
    "success": {},
    "candidate": {},
    "reason_codes": {}
  },
  "additionalProperties": true
}
```