Authenticate with an authentication server for more than one api

Question

We have a website and an open api, both of which are defined as clients in Identity Server:

  public static IEnumerable<Client> GetClients()
    {
        return new List<Client>
        {

            // resource owner password grant client
            new Client
            {
                ClientId = "API_RO",
                AllowedGrantTypes = GrantTypes.ResourceOwnerPassword,

                ClientSecrets =
                {
                    new Secret("secret".Sha256())
                },
                AllowedScopes = { "WEB_API" },
                IncludeJwtId = true,
                AlwaysIncludeUserClaimsInIdToken = true,
                AlwaysSendClientClaims = true                    
            },
            // OpenID Connect implicit flow client (MVC)
            new Client
            {
                ClientId = "PUBLIC_SPA_APPLICATION",
                AllowedGrantTypes = GrantTypes.Implicit,
                AllowAccessTokensViaBrowser = true,



                AllowedScopes = new List<string>
                {
                    IdentityServerConstants.StandardScopes.OpenId,
                    IdentityServerConstants.StandardScopes.Profile,
                    "WEB_API",
                },

                IncludeJwtId = true,
                AlwaysIncludeUserClaimsInIdToken = true,
      }
 }

And in the web service we authenticate against the token that is sent

 public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory, IServiceDiscovery serviceDiscovery)
{
 app.UseIdentityServerAuthentication(new IdentityServerAuthenticationOptions
        {

            Authority = $"{serviceInformation.Prefix}{serviceInformation.IpAddress}:{serviceInformation.Port}",
            RequireHttpsMetadata = false,                
            ApiName = "PUBLIC_SPA_APPLICATION", //"API_RO",<= PROBLEM HERE
            SaveToken = false
        });
}

The problem that I have is that the ApiName parameter allows you to install only one client. I need to find a way to work for both clients that came through the website and those that appeared through the API.

I am currently getting the following error:

The media has not been authenticated. Error message: IDX10214: Audience verification failed. Audiences: "PUBLIC_SPA_APPLICATION". Did not match: validationParameters.ValidAudience: 'API_RO' or validationParameters.ValidAudiences: 'null'.