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# List ProcedureParameterMeasuredValue items

GET https://{tenant_name}.benchling.com/api/v3/procedure-method-execution-instance/{procedure_method_execution_instance_id}/data-parameter-actual-values/items

List ProcedureParameterMeasuredValue items.

Reference: https://docs.benchling.com/docs/api/benchling-api/procedure-method-execution-instance/dataparameteractualvalues-list

## Authentication

- `Authorization` header (bearer token, required) — Bearer authentication of the form `Bearer <token>`, where token is your auth token.

## Request

### Path parameters

- `procedure_method_execution_instance_id` (string, required) — ID of the ProcedureMethodExecutionInstance.

### Headers

- `EARLY-ACCESS` (string, optional) — Set to true to access beta operations via /api/v3.

## Response

### 200

OK

- `items` (list of ProcedureParameterMeasuredValue, optional)

## Errors

### 400 Procedure Method Execution Instance Data Parameter Actual Values List Request Bad Request Error

Bad Request

- `detail` (GeneralErrorDetail, required, nullable)
- `instance` (string, required)
- `status` (integer, required)
- `title` (string, required, nullable)
- `type` (string, required)
- `invalidId` (string, optional)

### 403 Procedure Method Execution Instance Data Parameter Actual Values List Request Forbidden Error

Forbidden

- `detail` (GeneralErrorDetail, required, nullable)
- `instance` (string, required)
- `status` (integer, required)
- `title` (string, required, nullable)
- `type` (string, required)
- `invalidId` (string, optional)

### 404 Procedure Method Execution Instance Data Parameter Actual Values List Request Not Found Error

Not Found

- `detail` (GeneralErrorDetail, required, nullable)
- `instance` (string, required)
- `status` (integer, required)
- `title` (string, required, nullable)
- `type` (string, required)
- `invalidId` (string, optional)

### 429 Procedure Method Execution Instance Data Parameter Actual Values List Request Too Many Requests Error

Too Many Requests

- `detail` (TooManyRequestsErrorBodyDetail, required, nullable)
- `instance` (string, required)
- `status` (integer, required)
- `title` (string, required, nullable)
- `type` (string, required)
- `invalidId` (string, optional)
- `violated-policies` (list of enum, optional) — The budget policies that rejected the request, in canonical order: `user`, `integration`, then `tenant`.
  - Allowed values: `user`, `integration`, `tenant`

### 500 Procedure Method Execution Instance Data Parameter Actual Values List Request Internal Server Error

Internal Server Error

- `detail` (InternalServerErrorBodyDetail, required, nullable)
- `instance` (string, required)
- `status` (integer, required)
- `title` (string, required, nullable)
- `type` (string, required)
- `errorId` (string, optional)

## Types

### ProcedureParameterMeasuredValue

Records the actual measured or observed value for a parameter during procedure execution. Scientists enter measured values after performing an experimental step—for example, recording a temperature reading, an absorbance measurement, or an observed result. Distinct from `ProcedureParameterPlannedValue` (expected values set during setup) and `ProcedureParameterConfirmationValue` (verification that inputs match expectations). Includes an optional `comment` and `recordedAt` timestamp. Links to the specific `ProcedureMethodExecutionInstance` and `ProcedureParameterVersion` for context.

- `__typename` (string, optional)
- `amount` (map from string to any, optional, nullable)
- `comment` (string, optional)
- `container` (map from string to any, optional, nullable)
- `createdAt` (string, optional)
- `creator` (PrincipalRef, optional)
- `id` (string, optional)
- `methodExecutionInstance` (ProcedureMethodExecutionInstanceRef, optional, nullable)
- `modifiedAt` (string, optional)
- `parameterVersion` (ProcedureParameterVersionRef, optional)
- `recordedAt` (string, optional, nullable)
- `value` (map from string to any, optional)

### GeneralErrorDetail

### TooManyRequestsErrorBodyDetail

### InternalServerErrorBodyDetail

### PrincipalRef

- `__typename` (string, optional)
- `id` (string, optional)

### ProcedureMethodExecutionInstanceRef

- `__typename` (string, optional)
- `id` (string, optional)

### ProcedureParameterVersionRef

- `__typename` (string, optional)
- `id` (string, optional)

## Examples

**Response**

```json
{
  "items": [
    {
      "__typename": "__typename",
      "amount": {
        "key": "value"
      },
      "comment": "comment",
      "container": {
        "key": "value"
      },
      "createdAt": "createdAt",
      "id": "id",
      "modifiedAt": "modifiedAt",
      "recordedAt": "recordedAt",
      "value": {
        "key": "value"
      }
    }
  ]
}
```

**SDK Code**

```python
import requests

url = "https://{tenant_name}.benchling.com/api/v3/procedure-method-execution-instance/procedure_method_execution_instance_id/data-parameter-actual-values/items"

headers = {"Authorization": "Bearer <token>"}

response = requests.get(url, headers=headers)

print(response.json())
```

```javascript
const url = 'https://{tenant_name}.benchling.com/api/v3/procedure-method-execution-instance/procedure_method_execution_instance_id/data-parameter-actual-values/items';
const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```