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[@salesforce/b2c-tooling-sdk](../../modules.md) / [config](../index.md) / setActiveInstance

# Function: setActiveInstance()

> **setActiveInstance**(`name`, `options`): `Promise`\<`void`\>

Defined in: [packages/b2c-tooling-sdk/src/config/dw-json.ts:449](https://github.com/SalesforceCommerceCloud/b2c-developer-tooling/blob/e7c16f1ae423da0aa47b3e10be88f9770b53619b/packages/b2c-tooling-sdk/src/config/dw-json.ts#L449)

Set an instance as the active default.

## Parameters

### name

`string`

Name of the instance to set as active

### options

[`SetActiveInstanceOptions`](../interfaces/SetActiveInstanceOptions.md) = `{}`

Options

## Returns

`Promise`\<`void`\>

## Throws

Error if instance not found or dw.json doesn't exist