# REST v2 - Opportunity - Create an Opportunity - Empty Affiliate ID issue

**URL:** <https://integration.keap.com/t/rest-v2-opportunity-create-an-opportunity-empty-affiliate-id-issue/94134>\
**Category:** API Q&A\
**Created:** [July 8, 2026, 2:14pm UTC](https://integration.keap.com/t/rest-v2-opportunity-create-an-opportunity-empty-affiliate-id-issue/94134 "2026-07-08T14:14:53Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Pav](https://sea1.discourse-cdn.com/flex019/user_avatar/integration.keap.com/pav/32/124_2.png) [@Pav](https://integration.keap.com/u/Pav)\
**Post date:** [July 8, 2026, 2:14pm UTC](https://integration.keap.com/t/rest-v2-opportunity-create-an-opportunity-empty-affiliate-id-issue/94134/1 "2026-07-08T14:14:53Z")

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@OmarAlmonte, on using the Opportunity - Create an Opportunity endpoint for the first time it returned the following message below.

`Affiliate Id is invalid`

That seems to be a glitch because no Affiliate ID was supplied and it is not mandatory either.

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**Author:** ![OmarAlmonte](https://sea1.discourse-cdn.com/flex019/user_avatar/integration.keap.com/omaralmonte/32/15105_2.png) [@OmarAlmonte](https://integration.keap.com/u/OmarAlmonte)\
**Post date:** [July 8, 2026, 6:01pm UTC](https://integration.keap.com/t/rest-v2-opportunity-create-an-opportunity-empty-affiliate-id-issue/94134/2 "2026-07-08T18:01:53Z")

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Hi Pav, thanks for bringing this up. We will look into this.

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**Author:** ![Jim\_Winstead](https://avatars.discourse-cdn.com/v4/letter/j/aca169/32.png) [@Jim\_Winstead](https://integration.keap.com/u/Jim_Winstead)\
**Post date:** [October 15, 2026, 10:30pm UTC](https://integration.keap.com/t/rest-v2-opportunity-create-an-opportunity-empty-affiliate-id-issue/94134/3 "2026-10-15T22:30:09Z")

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Just wanted to note that this is still broken, it still fails when no `affiliate_id` is provided, or if it is set to `"0"`.

The v1 API doesn’t have the same problem.