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[@salesforce/b2c-tooling-sdk](../../../modules.md) / [operations/metrics](../index.md) / METRICS\_RETENTION\_MS

# Variable: METRICS\_RETENTION\_MS

> `const` **METRICS\_RETENTION\_MS**: `number`

Defined in: [packages/b2c-tooling-sdk/src/operations/metrics/index.ts:150](https://github.com/SalesforceCommerceCloud/b2c-developer-tooling/blob/4c2d4c5cb34e8e0ea15a260d257e468c823c4885/packages/b2c-tooling-sdk/src/operations/metrics/index.ts#L150)

How far back the Metrics API retains data: `from` must be no older than
`serverNow - 30 days`, or the API returns 400.