In current build of JBoss EAP 7.4.0.Beta-CR1, the wildfly-undertow_11_0.xsd contains definitions of following types:
Although, this schema now imports wildfly-credential-reference_1_1.xsd schema which defines the very same types. These changes were introduced with following commit and then updated to current version with this commit. Both were part of
WFLY-13369 ( WFLY-12510 effectively).
The wildfly-undertow_11_0.xsd is present in WildFly releases since WildFly 20:
As such, I believe that those two definitions in wildfly-undertow_11_0.xsd schema can and should be safely removed since they are inherited from the wildfly-credential-reference_1_1.xsd schema now anyway.
Note: Correct value of `Affects Version/s` for this issue should be 7.4.0.Beta-CR1, although there is no such option at the moment.