Update

backend/src/validation.ts

@@ -110,8 +110,8 @@ export function parseBillingStatus(value: unknown) {
     return null;
   }
 
-  if (value !== "billed" && value !== "non_billable") {
-    throw badRequest("billingStatus must be billed, non_billable or null");
+  if (value !== "billable" && value !== "billed" && value !== "non_billable") {
+    throw badRequest("billingStatus must be billable, billed, non_billable or null");
   }
 
   return value;