This user is not allowed to add in Zoho. Please contact support-as@zohocorp.com for further details

This user is not allowed to add in Zoho. Please contact support-as@zohocorp.com for further details

Hi,

When I add email user to my domain zgbaerospacerecruits.com, I got this error:

This user is not allowed to add in Zoho. Please contact support-as@zohocorp.com for further details

Please help.