diff --git a/src/components/01_branch-management/FormBranchInformation.vue b/src/components/01_branch-management/FormBranchInformation.vue
index f13cf051..28fd6004 100644
--- a/src/components/01_branch-management/FormBranchInformation.vue
+++ b/src/components/01_branch-management/FormBranchInformation.vue
@@ -57,9 +57,9 @@ function formatCode(input: string | undefined, type: 'code' | 'number') {
           :rules="[
             (val) => (val && val.length > 0) || $t('form.error.required'),
             (val) =>
-              (val && val.length > 0 && /^[a-zA-Z]+$/.test(val)) ||
+              (val && val.length > 0 && /^[a-zA-Z0-9]+$/.test(val)) ||
               $t('form.error.invalidCustomeMessage', {
-                msg: $t('form.error.letterOnly'),
+                msg: $t('form.error.letterAndNumOnly'),
               }),
           ]"
           @update:model-value="(v) => (abbreviation = v as string)"