---
schema_version: "1"
id: 26dccaf81aad0bea7f7e194f8f8393fdd1c2568ae3bb0beefeae24d27957db05
title: 400-499 Subscription Validation
collection: developer
version: current
locale: en-us
portal_url: https://docs.salesforce.com/developer/current/en-us/marketing-cloud/guides/mc-apis/400_499_subscription_validation.md
canonical_url: https://developer.salesforce.com/docs/marketing/marketing-cloud/guide/400_499_subscription_validation.html
source_site: developer.salesforce.com
content_type: documentation
content_hash: cc49fdda2db4258d171d730ed6fe5d9fe7111f9a7e82c7b21792a3b513eb217c
products:
  - Marketing Cloud Engagement APIs and Programmatic Languages
  - Marketing Cloud
---
# 400-499 Subscription Validation

| Error | Message |
| ----- | ------- |
| 400 | The subscriber could not be found on the specified JobID |
| 401 | The subscriber is already unsubscribed from the specified list |
| 402 | The Parameters array did not contain any values or did not contain any of the Parameters we were looking for |
| 403 | The EmailAddress, SubscriberKey and SubscriberID parameters were not specified or they were empty |
| 404 | The SubscriberKey permission is turned on but only EmailAddress was provided. You MUST supply SubscriberKey and/or SubscriberID |
| 405 | You supplied SubscriberID along with SubscriberKey and/or EmailAddress. These values refer to different subscribers |
| 406 | You supplied SubscriberKey along with SubscriberID and/or EmailAddress. These values refer to different subscribers |
| 407 | You supplied EmailAddress along with SubscriberID and/or SubscriberKey. These values refer to different subscribers |
| 408 | SubscriberNullOrEmpty |
| 409 | SubscriberListNullOrEmpty |