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• Have you provided a full/minimal spec to reproduce the issue?
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Description
If different Feign clients are generated, then multiple ClientConfigurations will be created with the same beans. This means that the clients cannot be initialized.

In my opinion, the @Configuration should be removed and the configuration should be specified in @EnableFeignClient or is currently also directly in the FeignClient. So it works without @Configuration.

The bigger issue is the ClientPropertiesConfiguration which loads, the properties. Maybe there should be a flag if the ClientPropertiesConfiguration should be generated or not. And also can be imported with @import from spring
https://www.baeldung.com/spring-import-annotation

Caused by: org.springframework.context.annotation.ConflictingBeanDefinitionException: Annotation-specified bean name 'clientConfiguration' for bean class [test.client2.config.ClientConfiguration] conflicts with existing, non-compatible bean definition of same name and class [test.client1.config.ClientConfiguration]
openapi-generator version
7.3.0

Steps to reproduce
See example here:
https://github.com/MelleD/open-api-feign-client-example