diff --git a/build/accounts-statement-schema.json b/build/accounts-statement-schema.json
index 6ba76ee..d76f7ca 100644
--- a/build/accounts-statement-schema.json
+++ b/build/accounts-statement-schema.json
@@ -887,7 +887,9 @@
           "type": "string"
         },
         "code": {
-          "type": "string"
+          "type": "string",
+          "minLength": 1,
+          "pattern": "[a-zA-Z0-9]"
         },
         "code_scheme_id": {
           "type": "string",
diff --git a/build/alternate-registration-schema.json b/build/alternate-registration-schema.json
index 45e0814..1350f5c 100644
--- a/build/alternate-registration-schema.json
+++ b/build/alternate-registration-schema.json
@@ -797,7 +797,9 @@
           "type": "string"
         },
         "code": {
-          "type": "string"
+          "type": "string",
+          "minLength": 1,
+          "pattern": "[a-zA-Z0-9]"
         },
         "code_scheme_id": {
           "type": "string",
diff --git a/build/company-schema.json b/build/company-schema.json
index 498858b..4ed0a40 100644
--- a/build/company-schema.json
+++ b/build/company-schema.json
@@ -629,7 +629,9 @@
           "type": "string"
         },
         "code": {
-          "type": "string"
+          "type": "string",
+          "minLength": 1,
+          "pattern": "[a-zA-Z0-9]"
         },
         "code_scheme_id": {
           "type": "string",
diff --git a/build/control-statement-schema.json b/build/control-statement-schema.json
index 851a0b8..9cc0268 100644
--- a/build/control-statement-schema.json
+++ b/build/control-statement-schema.json
@@ -1083,7 +1083,9 @@
           "type": "string"
         },
         "code": {
-          "type": "string"
+          "type": "string",
+          "minLength": 1,
+          "pattern": "[a-zA-Z0-9]"
         },
         "code_scheme_id": {
           "type": "string",
diff --git a/build/filing-schema.json b/build/filing-schema.json
index 9fc7938..e798bc1 100644
--- a/build/filing-schema.json
+++ b/build/filing-schema.json
@@ -811,7 +811,9 @@
           "type": "string"
         },
         "code": {
-          "type": "string"
+          "type": "string",
+          "minLength": 1,
+          "pattern": "[a-zA-Z0-9]"
         },
         "code_scheme_id": {
           "type": "string",
diff --git a/build/gazette-notice-schema.json b/build/gazette-notice-schema.json
index c3414c4..6973e5f 100644
--- a/build/gazette-notice-schema.json
+++ b/build/gazette-notice-schema.json
@@ -1441,7 +1441,9 @@
           "type": "string"
         },
         "code": {
-          "type": "string"
+          "type": "string",
+          "minLength": 1,
+          "pattern": "[a-zA-Z0-9]"
         },
         "code_scheme_id": {
           "type": "string",
diff --git a/build/licence-schema.json b/build/licence-schema.json
index 6be8bfc..2d26c61 100644
--- a/build/licence-schema.json
+++ b/build/licence-schema.json
@@ -819,7 +819,9 @@
           "type": "string"
         },
         "code": {
-          "type": "string"
+          "type": "string",
+          "minLength": 1,
+          "pattern": "[a-zA-Z0-9]"
         },
         "code_scheme_id": {
           "type": "string",
diff --git a/build/register-entry-schema.json b/build/register-entry-schema.json
index 4a2db65..d41613a 100644
--- a/build/register-entry-schema.json
+++ b/build/register-entry-schema.json
@@ -295,7 +295,9 @@
           "type": "string"
         },
         "code": {
-          "type": "string"
+          "type": "string",
+          "minLength": 1,
+          "pattern": "[a-zA-Z0-9]"
         },
         "code_scheme_id": {
           "type": "string",
diff --git a/build/sanctioned-entity-schema.json b/build/sanctioned-entity-schema.json
index c8236ae..2bcb58d 100644
--- a/build/sanctioned-entity-schema.json
+++ b/build/sanctioned-entity-schema.json
@@ -293,7 +293,9 @@
           "type": "string"
         },
         "code": {
-          "type": "string"
+          "type": "string",
+          "minLength": 1,
+          "pattern": "[a-zA-Z0-9]"
         },
         "code_scheme_id": {
           "type": "string",
diff --git a/build/subsequent-registration-schema.json b/build/subsequent-registration-schema.json
index 7caadeb..cb635a7 100644
--- a/build/subsequent-registration-schema.json
+++ b/build/subsequent-registration-schema.json
@@ -798,7 +798,9 @@
           "type": "string"
         },
         "code": {
-          "type": "string"
+          "type": "string",
+          "minLength": 1,
+          "pattern": "[a-zA-Z0-9]"
         },
         "code_scheme_id": {
           "type": "string",
diff --git a/build/supplier-relationship-schema.json b/build/supplier-relationship-schema.json
index 4a988b8..1f1e608 100644
--- a/build/supplier-relationship-schema.json
+++ b/build/supplier-relationship-schema.json
@@ -791,7 +791,9 @@
           "type": "string"
         },
         "code": {
-          "type": "string"
+          "type": "string",
+          "minLength": 1,
+          "pattern": "[a-zA-Z0-9]"
         },
         "code_scheme_id": {
           "type": "string",
diff --git a/build/trademark-registration-schema.json b/build/trademark-registration-schema.json
index 9eb7e62..c9cdc93 100644
--- a/build/trademark-registration-schema.json
+++ b/build/trademark-registration-schema.json
@@ -906,7 +906,9 @@
           "type": "string"
         },
         "code": {
-          "type": "string"
+          "type": "string",
+          "minLength": 1,
+          "pattern": "[a-zA-Z0-9]"
         },
         "code_scheme_id": {
           "type": "string",
diff --git a/schemas/includes/industry-code.json b/schemas/includes/industry-code.json
index 4db2d93..9bf69ad 100644
--- a/schemas/includes/industry-code.json
+++ b/schemas/includes/industry-code.json
@@ -7,7 +7,9 @@
       "type": "string"
     },
     "code": {
-      "type": "string"
+      "type": "string",
+      "minLength": 1,
+      "pattern": "[a-zA-Z0-9]"
     },
     "code_scheme_id": {
       "type": "string",