fix

modules/application/variables.tf

@@ -12,6 +12,7 @@ variable "app-group" {
 }
 variable "protocol_provider" {
   type        = number
+  default     = null
 }
 variable "dns-name" {
   type        = string
@@ -20,3 +21,8 @@ variable "sub-groups" {
   type        = list(string)
   default     = []
 }
+
+variable "backchannel_providers" {
+  type        = list(number)
+  default     = null
+}