Gh 24291 api meesage unclear when parameters are incorrect (#26457)

Co-authored-by: Mattermost Build <build@mattermost.com>

server/channels/api4/channel.go

@@ -10,6 +10,7 @@ import (
 	"strings"
 
 	"github.com/mattermost/mattermost/server/public/model"
+	"github.com/mattermost/mattermost/server/public/shared/i18n"
 	"github.com/mattermost/mattermost/server/public/shared/mlog"
 	"github.com/mattermost/mattermost/server/v8/channels/app"
 	"github.com/mattermost/mattermost/server/v8/channels/audit"
@@ -89,6 +90,16 @@ func createChannel(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	if channel.TeamId == "" {
+		c.SetInvalidParamWithDetails("team_id", i18n.T("api.channel.create_channel.missing_team_id.error"))
+		return
+	}
+
+	if channel.DisplayName == "" {
+		c.SetInvalidParamWithDetails("display_name", i18n.T("api.channel.create_channel.missing_display_name.error"))
+		return
+	}
+
 	auditRec := c.MakeAuditRecord("createChannel", audit.Fail)
 	defer c.LogAuditRec(auditRec)
 	audit.AddEventParameterAuditable(auditRec, "channel", channel)