> ## Documentation Index
> Fetch the complete documentation index at: https://www.plain.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# updateThreadServiceLevelAgreementPolicy

> Assign an SLA policy to a thread. A policy takes precedence over the thread's tier when selecting SLAs. Pass `serviceLevelAgreementPolicyId: null` to detach the policy and fall back to the tier's SLAs. Requires the `thread:edit` permission.