---
schema_version: "1"
id: c5485698dfe4f7d1e687c9064ddbcd007231772df23288fda104f4bfaa5f149e
title: RequestID
collection: developer
version: current
locale: en-us
portal_url: https://docs.salesforce.com/developer/current/en-us/marketing-cloud/guides/mc-apis/requestid_param_appex.md
canonical_url: https://developer.salesforce.com/docs/marketing/marketing-cloud/guide/requestid_param_appex.html
source_site: developer.salesforce.com
content_type: documentation
content_hash: 4ccf8cd02a542a8db53132dc82a0842f7cce3d3e7dee19de59ea5183293fefe7
products:
  - Marketing Cloud Engagement APIs and Programmatic Languages
  - Marketing Cloud
---
# RequestID

## Definition

A unique identifier for the request.

### Data Type

String