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

# Interface: EnvBackendOptions

Defined in: [packages/b2c-tooling-sdk/src/operations/mrt/env.ts:1444](https://github.com/SalesforceCommerceCloud/b2c-developer-tooling/blob/8fc17d8708d025c83fb0c44ca73198a200605153/packages/b2c-tooling-sdk/src/operations/mrt/env.ts#L1444)

Common backend-routing options shared by the backend-aware environment operations.

## Extended by

- [`ListEnvironmentsBackendOptions`](ListEnvironmentsBackendOptions.md)
- [`CreateEnvironmentBackendOptions`](CreateEnvironmentBackendOptions.md)
- [`CloneEnvironmentBackendOptions`](CloneEnvironmentBackendOptions.md)
- [`GetEnvironmentBackendOptions`](GetEnvironmentBackendOptions.md)
- [`UpdateEnvironmentBackendOptions`](UpdateEnvironmentBackendOptions.md)
- [`DeleteEnvironmentBackendOptions`](DeleteEnvironmentBackendOptions.md)
- [`SetPrimaryEnvironmentBackendOptions`](SetPrimaryEnvironmentBackendOptions.md)
- [`InvalidateCacheBackendOptions`](InvalidateCacheBackendOptions.md)

## Properties

### legacyAuth?

> `optional` **legacyAuth**: [`AuthStrategy`](../../../auth/interfaces/AuthStrategy.md)

Defined in: [packages/b2c-tooling-sdk/src/operations/mrt/env.ts:1450](https://github.com/SalesforceCommerceCloud/b2c-developer-tooling/blob/8fc17d8708d025c83fb0c44ca73198a200605153/packages/b2c-tooling-sdk/src/operations/mrt/env.ts#L1450)

Legacy API-key auth strategy. Optional; required only when the legacy backend actually runs.

***

### onFallback()?

> `optional` **onFallback**: (`reason`) => `void`

Defined in: [packages/b2c-tooling-sdk/src/operations/mrt/env.ts:1456](https://github.com/SalesforceCommerceCloud/b2c-developer-tooling/blob/8fc17d8708d025c83fb0c44ca73198a200605153/packages/b2c-tooling-sdk/src/operations/mrt/env.ts#L1456)

Invoked when `auto` falls back from SCAPI to legacy.

#### Parameters

##### reason

`string`

#### Returns

`void`

***

### onResolve()?

> `optional` **onResolve**: (`backend`) => `void`

Defined in: [packages/b2c-tooling-sdk/src/operations/mrt/env.ts:1458](https://github.com/SalesforceCommerceCloud/b2c-developer-tooling/blob/8fc17d8708d025c83fb0c44ca73198a200605153/packages/b2c-tooling-sdk/src/operations/mrt/env.ts#L1458)

Invoked with the backend that serves the call (for `-D` debug).

#### Parameters

##### backend

[`MrtBackend`](../type-aliases/MrtBackend.md)

#### Returns

`void`

***

### origin?

> `optional` **origin**: `string`

Defined in: [packages/b2c-tooling-sdk/src/operations/mrt/env.ts:1454](https://github.com/SalesforceCommerceCloud/b2c-developer-tooling/blob/8fc17d8708d025c83fb0c44ca73198a200605153/packages/b2c-tooling-sdk/src/operations/mrt/env.ts#L1454)

Legacy MRT API origin.

***

### preference

> **preference**: [`MrtBackendPreference`](../type-aliases/MrtBackendPreference.md)

Defined in: [packages/b2c-tooling-sdk/src/operations/mrt/env.ts:1446](https://github.com/SalesforceCommerceCloud/b2c-developer-tooling/blob/8fc17d8708d025c83fb0c44ca73198a200605153/packages/b2c-tooling-sdk/src/operations/mrt/env.ts#L1446)

Resolved `--mrt-backend` preference.

***

### projectSlug

> **projectSlug**: `string`

Defined in: [packages/b2c-tooling-sdk/src/operations/mrt/env.ts:1452](https://github.com/SalesforceCommerceCloud/b2c-developer-tooling/blob/8fc17d8708d025c83fb0c44ca73198a200605153/packages/b2c-tooling-sdk/src/operations/mrt/env.ts#L1452)

Project slug (= SCAPI storefront ID).

***

### scapiConnection?

> `optional` **scapiConnection**: [`ScapiMrtConnection`](ScapiMrtConnection.md)

Defined in: [packages/b2c-tooling-sdk/src/operations/mrt/env.ts:1448](https://github.com/SalesforceCommerceCloud/b2c-developer-tooling/blob/8fc17d8708d025c83fb0c44ca73198a200605153/packages/b2c-tooling-sdk/src/operations/mrt/env.ts#L1448)

SCAPI connection; when absent, `auto` uses legacy and `scapi` throws.