Created the channelValidation.ts

api/validations/channelValidation.ts

@@ -0,0 +1,13 @@
+import Joi from 'joi';
+
+export const patchChannel = Joi.object({
+    langCode: Joi.string()
+        .min(2)
+        .max(2),
+    designId: Joi.number()
+        .min(0)
+        .max(100),
+    topicId: Joi.number()
+        .min(0)
+        .max(100)
+});