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[@salesforce/b2c-tooling-sdk](../../../modules.md) / [operations/mrt](../index.md) / setPrimaryEnvironmentScapi

# Function: setPrimaryEnvironmentScapi()

> **setPrimaryEnvironmentScapi**(`conn`, `params`): `Promise`\<\{ `environment`: [`MrtEnvironmentView`](../interfaces/MrtEnvironmentView.md); `raw`: `unknown`; \}\>

Defined in: [packages/b2c-tooling-sdk/src/operations/mrt/env.ts:1377](https://github.com/SalesforceCommerceCloud/b2c-developer-tooling/blob/8fc17d8708d025c83fb0c44ca73198a200605153/packages/b2c-tooling-sdk/src/operations/mrt/env.ts#L1377)

Sets an environment as the storefront's primary environment via the SCAPI MRT
Environments API. The environment must be `ready` or `build_failed`;
idempotent (200 OK returns the environment).

## Parameters

### conn

[`ScapiMrtConnection`](../interfaces/ScapiMrtConnection.md)

### params

#### environmentId

`string`

#### storefrontId

`string`

## Returns

`Promise`\<\{ `environment`: [`MrtEnvironmentView`](../interfaces/MrtEnvironmentView.md); `raw`: `unknown`; \}\>

## Throws

carrying the HTTP status on a non-2xx response.