Unable to install SUSE CaaSP Module via SUSEConnect from SLE 15 AMI instance

I’ve been following the Deployment instructions for SUSE CaaS Platform 4.2, but I’ve ran into an issue in the ‘3.1.4 Installation Tools’ section. I’m getting the following error when trying to install the CaaSP extension :

ec2-user@an-ip:~> sudo SUSEConnect -p caasp/4.0/x86_64 -r <MY_CAASP_REGISTRATION_CODE>
Registering system to registration proxy https://smt-ec2.susecloud.net

Updating system details on https://smt-ec2.susecloud.net ...

Activating caasp 4.0 x86_64 ...
Error: Registration server returned 'No product found' (422)

The previous commands to activate SUSE Linux Enterprise and add the free Containers module were successful. All commands are being run from a SUSE Linux Enterprise Server 15 SP1 (HVM), SSD Volume Type - ami-02ecd61acb94c136d (64-bit x86).

Thanks in advance for your help!