Error using API to create product with Publications enabled

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 7.3
• Fix Version/s: 7.3 FP1, 7.3.X
• Component/s: APIs, Integrations and Extension Points, APIs, Integrations and Extension Points → Headless Storefront APIs, APIs, Integrations and Extension Points → Talend Component
• Labels:
  • liferay-fixpack-dxp-1-7310
  • liferay-fixpack-dxp-2-7310
• Severity of Issue: Major
• OS:
  Ubuntu LTS 18.04
• JDK:
  Oracle Sun JDK 8
• Application Servers:
  Apache Tomcat 9.0.x
• Browsers:
  Chrome (latest)
• Databases:
  MySQL 5.7
• Device Type:
  Desktop
• Search:
  Elasticsearch 7.x

Hello,
I am using the Headless API to create a product with a DXP 7.3 instance, and everything goes fine.

But using the same Headless API (create a product) in a Liferay instance with Publications enabled i get this error:

"status" : "INTERNAL_SERVER_ERROR", "title" : "CT transaction validation failure. Nested operation using co[email protected]456f8253 can only be performed in production mode." }

Note: I was using the Talend Connector as gateway to the APIs, and this error happens when in the Publications UI selector the option "Work in my custom publication" is selected.