While running the migration tool to upgrade from EAP 7.2 to EAP 7.4, see the following error message
ERROR [logger] Migration failed: org.jboss.migration.core.ServerMigrationFailureException: java.lang.IllegalArgumentException: WFCMTOOL000004: Server name = JBoss EAP, version = 7.4.0.GA does not support migration from server name = JBoss EAP, version = 7.2.9.GA.
at org.jboss.migration.core.task.TaskExecutionImpl.run(TaskExecutionImpl.java:174) [jboss-server-migration-core-1.10.0.Final-redhat-00007.jar:1.10.0.Final-redhat-00007]
at org.jboss.migration.core.ServerMigration.run(ServerMigration.java:160) [jboss-server-migration-core-1.10.0.Final-redhat-00007.jar:1.10.0.Final-redhat-00007]
at org.jboss.migration.cli.CommandLineServerMigration.main(CommandLineServerMigration.java:131) [jboss-server-migration-cli-1.10.0.Final-redhat-00007.jar:1.10.0.Final-redhat-00007]
at org.jboss.modules.Module.run(Module.java:353) [jboss-modules.jar:1.11.0.Final-redhat-00001]
at org.jboss.modules.Module.run(Module.java:321) [jboss-modules.jar:1.11.0.Final-redhat-00001]
EAP 7.4
At least CP Patch 02 must be applied on top of JBoss EAP 7.4 for this to work.
While performing migration with Migration tool from JBoss EAP 7.x (any version) to JBoss EAP 7.4, confirm you have applied atleast CP Patch 02 on top of JBoss EAP 7.4.
Refer How to apply Patch on Jboss EAP 7.4
To perform migration with the help of Migration Tool, refer article - How to use JBoss Server Migration Tool to upgrade from one version of JBoss EAP 7.x to another version of JBoss EAP 7.x.