Spring multitenancy Api-Server not working for external issuer

[igorroman777]

I have a problem. I have made api-Server (spring boot) as multi-tenancy. It works locally:
`

Map<String, AuthenticationManager> authenticationManagers = new HashMap<>();
JwtIssuerAuthenticationManagerResolver authenticationManagerResolver = new JwtIssuerAuthenticationManagerResolver(
		authenticationManagers::get);

protected void configure(HttpSecurity http) throws Exception {
http.authorizeRequests().antMatchers(AUTH_WHITELIST).permitAll(); // whitelist Swagger UI resources
// .antMatchers("/admin/**").permitAll();

	// for customergui :: customergui -> apiserver issuer uri
	authenticationManagers.put(customerguiIssuerUriAntragsportal, jwt(apiserverIssuerUriAntragsportal));

	// for configurationgui :: configurationgui -> apiserver issuer uri
	authenticationManagers.put(configurationguiIssuerUriConfigGui, jwt(apiserveriIssuerUriConfigGui));

	http
			.csrf().disable()
			.authorizeRequests(authorize -> authorize
					// .mvcMatchers("/**/message/**").hasAuthority("SCOPE_message:read")
					.antMatchers("/admin/**").hasRole("ACCESS_ADMIN_API")
					.anyRequest().authenticated())
			.oauth2ResourceServer(oauth2ResourceServer -> oauth2ResourceServer
					.authenticationManagerResolver(this.authenticationManagerResolver));

}

AuthenticationManager jwt(String issuerUri) {
	JwtAuthenticationProvider authenticationProvider = new JwtAuthenticationProvider(
			JwtDecoders.fromOidcIssuerLocation(issuerUri));
	authenticationProvider.setJwtAuthenticationConverter(getJwtAuthenticationConverter());

	return authenticationProvider::authenticate;
}

JwtAuthenticationConverter getJwtAuthenticationConverter() {
	JwtAuthenticationConverter conv = new JwtAuthenticationConverter();

	conv.setJwtGrantedAuthoritiesConverter(jwt -> mapKeycloakRealmRoles(jwt));
	return conv;
}

`

but productively not. there comes api-call from getaway-client. And this client is in other external network. I.e host in issuer is different than in api server.