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# Get ProcedureMethodExecutionInstance by ID

GET https://{tenant_name}.benchling.com/api/v3/procedure-method-execution-instance/{procedure_method_execution_instance_id}

Get a single ProcedureMethodExecutionInstance by ID.

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

## 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.

### Query parameters

- `returning` (string, optional) — Comma-separated list of top-level fields to include in each returned item. Cannot overlap with omit.
- `omit` (string, optional) — Comma-separated list of top-level fields to omit from each returned item. Cannot overlap with returning.

### Headers

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

## Response

### 200

OK

- `__typename` (string, optional)
- `archiveReason` (string, optional, nullable)
- `archived` (boolean, optional)
- `createdAt` (string, optional)
- `dataParameterActualValues` (string, optional)
- `dataParameterConfirmationValues` (string, optional)
- `dataParameterPlannedValues` (string, optional) — Source of truth for this specific PMEI's planned data parameter values, with any condition overrides.
- `equipmentConfirmationValues` (string, optional)
- `equipmentPlannedValues` (string, optional) — Source of truth for this specific PMEI's planned equipment values, with any condition overrides.
- `id` (string, optional)
- `materialInputConfirmationValues` (string, optional)
- `materialInputPlannedValues` (string, optional) — Source of truth for this specific PMEI's planned material input values, with any condition overrides. Note: This will not include any process intermediate values when previous methods have not yet been completed.
- `materialOutputConfirmationValues` (string, optional)
- `modifiedAt` (string, optional)
- `procedureRun` (ProcedureRunRef, optional)
- `procedureRunConditionReplicate` (ProcedureRunConditionReplicateRef, optional)
- `stepGroups` (list of ProcedureExecutionStepGroup, optional)
- `taskTransitionExtensions` (list of TaskTransitionExtension, optional)
- `templateMethodVersion` (ProcedureMethodDefinitionVersionRef, optional) — The "template" method version represents the PMDV on the procedure template that this PMEI is based on. In most cases this is equivalent to the planMethodVersion. They only differ on older legacy ProcedureRuns, where "plan" PMDVs belong to a legacy "plan" ProcedureFlowchart model and we compiled a dedicated ProcedureFlowchart for this run (with its own PMDVs) based on the template's legacy ProcedureFlowchart. Do not directly use the parameter planned values from this PMDV. dataParameterPlannedValues, materialInputPlannedValues, and equipmentPlannedValues on the PMEI itself are the source of truth instead, since they account for experiment planning condition overrides that are not reflected on the PMDV. Do not use the confirmation methods from the parameter versions in this PMDV. parameterConfirmationMethods on the PMEI itself is the source of truth instead, since it accounts for experiment planning condition overrides that are not reflected on the PMDV.

## Errors

### 400 Procedure Method Execution Instance Get 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 Get 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 Get 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 Get 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 Get 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

### ProcedureRunRef

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

### ProcedureRunConditionReplicateRef

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

### ProcedureExecutionStepGroup

Groups step execution instances by their execution phase during a procedure run. Analogous to `ProcedureStepGroup` but contains actual execution instances (`ProcedureStepExecutionInstance`) rather than step definitions. Each group's steps are ordered by execution sequence.

- `__typename` (string, optional)
- `group` (enum, optional)
  - Allowed values: `PRE_RUN`, `RUN`, `POST_RUN`
- `steps` (list of ProcedureStepExecutionInstanceRef, optional)

### TaskTransitionExtension

Records a status change event on a method task during procedure execution. Captures the comment provided, the human-readable status name, and the timestamp when the transition occurred. Used to track the history of task state changes.

- `__typename` (string, optional)
- `comment` (string, optional)
- `statusDisplayName` (string, optional)
- `timestampUtcIsoformat` (string, optional)

### ProcedureMethodDefinitionVersionRef

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

### GeneralErrorDetail

### TooManyRequestsErrorBodyDetail

### InternalServerErrorBodyDetail

### ProcedureStepExecutionInstanceRef

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

## Examples

**Response**

```json
{
  "__typename": "__typename",
  "archiveReason": "archiveReason",
  "archived": true,
  "createdAt": "createdAt",
  "dataParameterActualValues": "dataParameterActualValues",
  "dataParameterConfirmationValues": "dataParameterConfirmationValues",
  "dataParameterPlannedValues": "dataParameterPlannedValues",
  "equipmentConfirmationValues": "equipmentConfirmationValues",
  "equipmentPlannedValues": "equipmentPlannedValues",
  "id": "id",
  "materialInputConfirmationValues": "materialInputConfirmationValues",
  "materialInputPlannedValues": "materialInputPlannedValues",
  "materialOutputConfirmationValues": "materialOutputConfirmationValues",
  "modifiedAt": "modifiedAt",
  "procedureRun": {
    "__typename": "__typename",
    "id": "id"
  },
  "procedureRunConditionReplicate": {
    "__typename": "__typename",
    "id": "id"
  },
  "stepGroups": [
    {
      "__typename": "__typename",
      "group": "PRE_RUN",
      "steps": [
        {}
      ]
    }
  ],
  "taskTransitionExtensions": [
    {
      "__typename": "__typename",
      "comment": "comment",
      "statusDisplayName": "statusDisplayName",
      "timestampUtcIsoformat": "timestampUtcIsoformat"
    }
  ],
  "templateMethodVersion": {
    "__typename": "__typename",
    "id": "id"
  }
}
```

**SDK Code**

```python
import requests

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

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';
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);
}
```