diff --git a/solutions/fully-configurable/variables.tf b/solutions/fully-configurable/variables.tf
index c261c807..148e6bb7 100644
--- a/solutions/fully-configurable/variables.tf
+++ b/solutions/fully-configurable/variables.tf
@@ -20,24 +20,9 @@ variable "prefix" {
   nullable    = true
   description = "The prefix to be added to all resources created by this solution. To skip using a prefix, set this value to null or an empty string. The prefix must begin with a lowercase letter and may contain only lowercase letters, digits, and hyphens '-'. It should not exceed 16 characters, must not end with a hyphen('-'), and can not contain consecutive hyphens ('--'). Example: prod-0205-cos. [Learn more](https://terraform-ibm-modules.github.io/documentation/#/prefix.md)."
 
-  validation {
-    # - null and empty string is allowed
-    # - Must not contain consecutive hyphens (--): length(regexall("--", var.prefix)) == 0
-    # - Starts with a lowercase letter: [a-z]
-    # - Contains only lowercase letters (a–z), digits (0–9), and hyphens (-)
-    # - Must not end with a hyphen (-): [a-z0-9]
-    condition = (var.prefix == null || var.prefix == "" ? true :
-      alltrue([
-        can(regex("^[a-z][-a-z0-9]*[a-z0-9]$", var.prefix)),
-        length(regexall("--", var.prefix)) == 0
-      ])
-    )
-    error_message = "Prefix must begin with a lowercase letter and may contain only lowercase letters, digits, and hyphens '-'. It must not end with a hyphen('-'), and cannot contain consecutive hyphens ('--')."
-  }
-
   validation {
     # must not exceed 16 characters in length
-    condition     = length(var.prefix) <= 16
+    condition = var.prefix == null || var.prefix == "" ? true : length(var.prefix) <= 16
     error_message = "Prefix must not exceed 16 characters."
   }
 }
diff --git a/solutions/security-enforced/variables.tf b/solutions/security-enforced/variables.tf
index eb9a5a72..a10fd4cf 100644
--- a/solutions/security-enforced/variables.tf
+++ b/solutions/security-enforced/variables.tf
@@ -20,24 +20,9 @@ variable "prefix" {
   nullable    = true
   description = "The prefix to be added to all resources created by this solution. To skip using a prefix, set this value to null or an empty string. The prefix must begin with a lowercase letter and may contain only lowercase letters, digits, and hyphens '-'. It should not exceed 16 characters, must not end with a hyphen('-'), and can not contain consecutive hyphens ('--'). Example: prod-0205-cos. [Learn more](https://terraform-ibm-modules.github.io/documentation/#/prefix.md)."
 
-  validation {
-    # - null and empty string is allowed
-    # - Must not contain consecutive hyphens (--): length(regexall("--", var.prefix)) == 0
-    # - Starts with a lowercase letter: [a-z]
-    # - Contains only lowercase letters (a–z), digits (0–9), and hyphens (-)
-    # - Must not end with a hyphen (-): [a-z0-9]
-    condition = (var.prefix == null || var.prefix == "" ? true :
-      alltrue([
-        can(regex("^[a-z][-a-z0-9]*[a-z0-9]$", var.prefix)),
-        length(regexall("--", var.prefix)) == 0
-      ])
-    )
-    error_message = "Prefix must begin with a lowercase letter and may contain only lowercase letters, digits, and hyphens '-'. It must not end with a hyphen('-'), and cannot contain consecutive hyphens ('--')."
-  }
-
   validation {
     # must not exceed 16 characters in length
-    condition     = length(var.prefix) <= 16
+    condition = var.prefix == null || var.prefix == "" ? true : length(var.prefix) <= 16
     error_message = "Prefix must not exceed 16 characters."
   }
 }