Required field Subscriber UID missing

[JUSTIFY]Please help me, where I get his Subscriber UID from, thank you.

This email is to notify you that for the workflow "Sachkundenachweis" , a recent task was not executed due to following error - [/JUSTIFY]

Task History ID: IjU3NjcwNTY1MDYzNzA0MzQ1MjY1NTUzMDUxMzM1MTY0NTQzNSI_3D_pc
Step Name: Zagomail > Add Tag To Subscriber
Connection Name: Zagomail
Task Error Detail:

{
"status": "error",
"message": "Required field Subscriber UID missing. Learn more: https://forum.pabbly.com/threads/how-to-fix-required-field-is-missing-errors-in-pabbly-connect.7488/"
}

Hey @Karin

The Subscriber, you are trying to create already exists in an account that's why "Create Subscriber" doesn't capture the Subscriber UUID and returns the error.