diff --git a/resources/assets/vue/components/address/forms/EInvoiceInfoFormComponent.vue b/resources/assets/vue/components/address/forms/EInvoiceInfoFormComponent.vue
index 1393865a..f39a141f 100644
--- a/resources/assets/vue/components/address/forms/EInvoiceInfoFormComponent.vue
+++ b/resources/assets/vue/components/address/forms/EInvoiceInfoFormComponent.vue
@@ -158,11 +158,15 @@
     }
 
     function notZero(value) {
-        return value !== 0 && value !== '0' && value !== null && value !== undefined
+        return value !== 0 && value !== '0' && value !== null && value !== undefined;
     }
 
     function fiveDigits(value) {
-        return /^\d{5}$/.test(value)
+        return /^\d{5}$/.test(value);
+    }
+
+    function allowZeroOrFiveDigits(value) {
+        return Number(value) === 0 || /^\d{5}$/.test(value);
     }
 
     export default {
@@ -246,7 +250,7 @@
                     },
                     msic_code: companyType === 1 ? {
                         notZero, fiveDigits
-                    }: {},
+                    } : { allowZeroOrFiveDigits },
                 }
             }
         },
diff --git a/resources/assets/vue/components/companies/forms/ChangeCustomerCompanyDetailsFormComponent.vue b/resources/assets/vue/components/companies/forms/ChangeCustomerCompanyDetailsFormComponent.vue
index 96d3abbe..f4997a34 100644
--- a/resources/assets/vue/components/companies/forms/ChangeCustomerCompanyDetailsFormComponent.vue
+++ b/resources/assets/vue/components/companies/forms/ChangeCustomerCompanyDetailsFormComponent.vue
@@ -118,11 +118,15 @@
     }
 
     function notZero(value) {
-        return value !== 0 && value !== '0' && value !== null && value !== undefined
+        return value !== 0 && value !== '0' && value !== null && value !== undefined;
     }
 
     function fiveDigits(value) {
-        return /^\d{5}$/.test(value)
+        return /^\d{5}$/.test(value);
+    }
+
+    function allowZeroOrFiveDigits(value) {
+        return Number(value) === 0 || /^\d{5}$/.test(value);
     }
 
     export default {
@@ -181,7 +185,7 @@
                     : {},
                     msic_code: isEInvoiceEnabled && companyType === 1 ? {
                         notZero, fiveDigits
-                    }: {},
+                    }: { allowZeroOrFiveDigits },
 
                     address_id: {},
                     street_one: isEInvoiceEnabled ? { required } : {},
diff --git a/resources/assets/vue/components/general/forms/ValidationErrorComponent.vue b/resources/assets/vue/components/general/forms/ValidationErrorComponent.vue
index 37223319..24538c48 100644
--- a/resources/assets/vue/components/general/forms/ValidationErrorComponent.vue
+++ b/resources/assets/vue/components/general/forms/ValidationErrorComponent.vue
@@ -10,6 +10,9 @@
             <span class="btn-block" v-if="['fiveDigits'].includes(param)">
                 {{ errorMessages[param] }}
             </span>
+            <span class="btn-block" v-if="['allowZeroOrFiveDigits'].includes(param)">
+                {{ errorMessages[param] }}
+            </span>
         </small>
     </div>
 </template>
@@ -31,7 +34,8 @@
                     sameAs: 'this field must match the',
                     maxValue: 'this value must not exceeds',
                     alphaNum: 'this value must be alphanumeric',
-                    fiveDigits: 'this value must be exactly 5 digits', //custom
+                    fiveDigits: 'this value must be exactly 5 digits',
+                    allowZeroOrFiveDigits: 'this value must be exactly 5 digits or 0',
                     // notZero: 'this value cannot be zero',
                 },
             }