Do not enter identical mixed loading groups

What causes this issue?

You attempted to create a segregation rule for enterprise-specific
<DS:GLOS.498E60F84247D411AB370060B03C3B0B>mixed loading groups</>.
The two enterprise-specific mixed loading groups specified must be
different in this case.

How to fix this error?

Create a segregation rule with two enterprise-specific mixed loading
groups that are not identical.

Error message extract from SAP system. Copyright SAP SE.