Specify a prefix for the technical service name and technical model name

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Consider the following when specifying the prefix:
If you want to create your service in customer namespace your prefix
should start with a ?Z? or a ?Y?
The maximum length of the service name is 35 characters
The maximum length of the model name is 32 characters
If you have selected services from both customer and non-customer
namespace a prefix is mandatory

Error message extract from SAP system. Copyright SAP SE.