3495793 - SAP Datasphere Free tenant cannot be created even though the old free one has been deleted

You are following this document and trying to create a free SAP Datasphere tenant. After deleting this free tenant and you would like to create a new free tenant. But there are some errors.

Couldn't create service '***'.Please view details for more information.
Failed provisioning request context:・・・・・・・・・・Stasus:400;
ErrorMessage;:Description: You cannot create a Free plan instance.The limit per global account has been reached; ResponseError;

SAP Datasphere

Delete a free tenant and create a new one.

System design.

In SAP Business Technology Platform (SAP BTP), if you have an SAP Datasphere service instance with a free plan, which you can use for 90 days, you can update it to a standard plan (no time limitation) for productive purposes. The number of days before the expiration is displayed in the top panel of SAP Datasphere. 

https://help.sap.com/docs/SAP_DATASPHERE/9f804b8efa8043539289f42f372c4862/f173be27e9cb4c758c0f1fa133d9edda.html

Once the free tenant is deleted it will be suspended for 5 ~ 7 days. During this period new free tenant CANNOT be created. Of course you can still upgrade your service instance from the free to standard plan. If your tenant is deleted, the service instance will still be shown in your Global Account, but it is not functional. You can delete it and create a new SAP Datasphere service instance with a free plan.

KBA , DS-SM , Space Management , How To