diff --git a/app/Http/Requests/CustomerRequest.php b/app/Http/Requests/CustomerRequest.php
index d93e5de1..be8e5c96 100644
--- a/app/Http/Requests/CustomerRequest.php
+++ b/app/Http/Requests/CustomerRequest.php
@@ -36,6 +36,7 @@ class CustomerRequest extends FormRequest
                     'name' => 'required',
                     'addresses.*.address_street_1' => 'max:255',
                     'addresses.*.address_street_2' => 'max:255',
+                    'email' =>  'email|nullable|unique:users,email,'.$this->id
                 ];
                 break;
             default:
diff --git a/resources/assets/js/components/base/modal/CategoryModal.vue b/resources/assets/js/components/base/modal/CategoryModal.vue
index 609e1d85..5226869e 100644
--- a/resources/assets/js/components/base/modal/CategoryModal.vue
+++ b/resources/assets/js/components/base/modal/CategoryModal.vue
@@ -148,7 +148,11 @@ export default {
       }
 
       if (response.data) {
-        window.toastr['success'](this.$t('settings.expense_category.created_message'))
+        if (!this.isEdit) {
+          window.toastr['success'](this.$t('settings.expense_category.created_message'))
+        } else {
+          window.toastr['success'](this.$t('settings.expense_category.updated_message'))
+        }
         window.hub.$emit('newCategory', response.data.category)
         this.closeCategoryModal()
         this.isLoading = false
diff --git a/resources/assets/js/components/base/modal/CustomerModal.vue b/resources/assets/js/components/base/modal/CustomerModal.vue
index 101564a1..33f7386c 100644
--- a/resources/assets/js/components/base/modal/CustomerModal.vue
+++ b/resources/assets/js/components/base/modal/CustomerModal.vue
@@ -67,15 +67,10 @@
                 <label class="col-sm-4 col-form-label input-label">{{ $t('customers.phone') }}</label>
                 <div class="col-sm-7">
                   <base-input
-                    :invalid="$v.formData.phone.$error"
                     v-model.trim="formData.phone"
                     type="text"
                     name="phone"
-                    @input="$v.formData.phone.$touch()"
                   />
-                  <div v-if="$v.formData.phone.$error">
-                    <span v-if="!$v.formData.phone.numeric" class="text-danger">{{ $tc('validation.numbers_only') }}</span>
-                  </div>
                 </div>
               </div>
               <div class="form-group row">
@@ -113,15 +108,10 @@
                 <label class="col-sm-4 col-form-label input-label">{{ $t('customers.phone') }}</label>
                 <div class="col-sm-7">
                   <base-input
-                    :invalid="$v.billing.phone.$error"
                     v-model.trim="billing.phone"
                     type="text"
                     name="phone"
-                    @input="$v.billing.phone.$touch()"
                   />
-                  <div v-if="$v.billing.phone.$error">
-                    <span v-if="!$v.billing.phone.numberic" class="text-danger">{{ $tc('validation.numbers_only') }}</span>
-                  </div>
                 </div>
               </div>
 
@@ -249,15 +239,10 @@
                 <label class="col-sm-4 col-form-label input-label">{{ $t('customers.phone') }}</label>
                 <div class="col-sm-7">
                   <base-input
-                    :invalid="$v.shipping.phone.$error"
                     v-model.trim="shipping.phone"
                     type="text"
                     name="phone"
-                    @input="$v.shipping.phone.$touch()"
                   />
-                  <div v-if="$v.shipping.phone.$error">
-                    <span v-if="!$v.shipping.phone.numberic" class="text-danger">{{ $tc('validation.numbers_only') }}</span>
-                  </div>
                 </div>
               </div>
 
@@ -426,17 +411,11 @@ export default {
       email: {
         email
       },
-      phone: {
-        numeric
-      },
       website: {
         url
       }
     },
     billing: {
-      phone: {
-        numeric
-      },
       address_street_1: {
         maxLength: maxLength(255)
       },
@@ -445,9 +424,6 @@ export default {
       }
     },
     shipping: {
-      phone: {
-        numeric
-      },
       address_street_1: {
         maxLength: maxLength(255)
       },
@@ -629,21 +605,28 @@ export default {
       } else {
         this.formData.currency_id = this.defaultCurrency.id
       }
-      let response = await this.addCustomer(this.formData)
-      if (response.data) {
-        window.toastr['success'](this.$tc('customers.created_message'))
-        this.isLoading = false
-        if (this.$route.name === 'invoices.create') {
-          this.setInvoiceCustomer(response.data.customer.id)
+      try {
+        let response = await this.addCustomer(this.formData)
+        if (response.data) {
+          window.toastr['success'](this.$tc('customers.created_message'))
+          this.isLoading = false
+          if (this.$route.name === 'invoices.create') {
+            this.setInvoiceCustomer(response.data.customer.id)
+          }
+          if (this.$route.name === 'estimates.create') {
+            this.setEstimateCustomer(response.data.customer.id)
+          }
+          this.resetData()
+          this.closeModal()
+          return true
         }
-        if (this.$route.name === 'estimates.create') {
-          this.setEstimateCustomer(response.data.customer.id)
+      // window.toastr['error'](response.data.error)
+      } catch (err) {
+        if (err.response.data.errors.email) {
+          this.isLoading = false
+          window.toastr['error'](this.$t('validation.email_already_taken'))
         }
-        this.resetData()
-        this.closeModal()
-        return true
       }
-      window.toastr['error'](response.data.error)
     },
     async fetchCountry () {
       let res = await window.axios.get('/api/countries')
diff --git a/resources/assets/js/components/base/modal/TaxTypeModal.vue b/resources/assets/js/components/base/modal/TaxTypeModal.vue
index 76b26240..587139f1 100644
--- a/resources/assets/js/components/base/modal/TaxTypeModal.vue
+++ b/resources/assets/js/components/base/modal/TaxTypeModal.vue
@@ -189,7 +189,11 @@ export default {
         response = await this.updateTaxType(this.formData)
       }
       if (response.data) {
-        window.toastr['success'](this.$t('settings.tax_types.created_message'))
+        if (!this.isEdit) {
+          window.toastr['success'](this.$t('settings.tax_types.created_message'))
+        } else {
+          window.toastr['success'](this.$t('settings.tax_types.updated_message'))
+        }
         window.hub.$emit('newTax', response.data.taxType)
         this.closeTaxModal()
         this.isLoading = false
diff --git a/resources/assets/js/components/base/popup/CustomerSelectPopup.vue b/resources/assets/js/components/base/popup/CustomerSelectPopup.vue
index d0f9994b..6d9ea0e4 100644
--- a/resources/assets/js/components/base/popup/CustomerSelectPopup.vue
+++ b/resources/assets/js/components/base/popup/CustomerSelectPopup.vue
@@ -34,7 +34,7 @@
       </div>
     </div>
 
-    <button class="list-add-button" @click="openCustomerModal">
+    <button type="button" class="list-add-button" @click="openCustomerModal">
       <font-awesome-icon class="icon" icon="user-plus" />
       <label>{{ $t('customers.add_new_customer') }}</label>
     </button>
diff --git a/resources/assets/js/plugins/en.js b/resources/assets/js/plugins/en.js
index d43b518b..73cf28af 100644
--- a/resources/assets/js/plugins/en.js
+++ b/resources/assets/js/plugins/en.js
@@ -642,9 +642,9 @@ export default {
       percent: 'Percent',
       action: 'Action',
       tax_setting_description: 'Enable this if you want to add taxes to individual invoice items. By default, taxes are added directly to the invoice.',
-      created_message: 'Sales tax created successfully',
-      updated_message: 'Sales tax updated successfully',
-      deleted_message: 'Sales tax deleted successfully',
+      created_message: 'Tax type created successfully',
+      updated_message: 'Tax type updated successfully',
+      deleted_message: 'Tax type deleted successfully',
       confirm_delete: 'You will not be able to recover this Tax Type',
       already_in_use: 'Tax is already in use'
     },
@@ -655,7 +655,7 @@ export default {
       add_new_category: 'Add New Category',
       category_name: 'Category Name',
       category_description: 'Description',
-      created_message: 'Category created successfully',
+      created_message: 'Expense Category created successfully',
       deleted_message: 'Expense category deleted successfully',
       updated_message: 'Expense category updated successfully',
       confirm_delete: 'You will not be able to recover this Expense Category',
diff --git a/resources/assets/js/plugins/es.js b/resources/assets/js/plugins/es.js
index 6c43c839..0535b5c9 100644
--- a/resources/assets/js/plugins/es.js
+++ b/resources/assets/js/plugins/es.js
@@ -638,9 +638,9 @@ export default {
       percent: 'Por ciento',
       action: 'Acción',
       tax_setting_description: 'Habilítelo si desea agregar impuestos a artículos de factura individuales. Por defecto, los impuestos se agregan directamente a la factura.',
-      created_message: 'Impuesto sobre las ventas creado con éxito',
-      updated_message: 'Impuesto sobre ventas actualizado con éxito',
-      deleted_message: 'Impuesto sobre las ventas eliminado con éxito',
+      created_message: 'Tipo de impuesto creado con éxito',
+      updated_message: 'Tipo de impuesto actualizado correctamente',
+      deleted_message: 'Tipo de impuesto eliminado correctamente',
       confirm_delete: 'No podrá recuperar este tipo de impuesto',
       already_in_use: 'El impuesto ya está en uso.'
     },
@@ -651,7 +651,7 @@ export default {
       add_new_category: 'Añadir nueva categoria',
       category_name: 'nombre de la categoría',
       category_description: 'Descripción',
-      created_message: 'Categoría creada con éxito',
+      created_message: 'Categoría de gastos creada con éxito',
       deleted_message: 'Categoría de gastos eliminada correctamente',
       updated_message: 'Categoría de gastos actualizada con éxito',
       confirm_delete: 'No podrá recuperar esta categoría de gastos',
diff --git a/resources/assets/js/plugins/fr.js b/resources/assets/js/plugins/fr.js
index 5b8e1882..1a8a11cf 100644
--- a/resources/assets/js/plugins/fr.js
+++ b/resources/assets/js/plugins/fr.js
@@ -640,9 +640,9 @@ export default {
       percent: 'Pour cent',
       action: 'action',
       tax_setting_description: 'Activez cette option si vous souhaitez ajouter des taxes à des postes de facture individuels. Par défaut, les taxes sont ajoutées directement à la facture.',
-      created_message: 'La taxe de vente créée avec succès',
-      updated_message: 'La taxe de vente a été mise à jour avec succès',
-      deleted_message: 'La taxe de vente a été supprimée avec succès',
+      created_message: 'Type de taxe créé avec succès',
+      updated_message: 'Type de taxe mis à jour avec succès',
+      deleted_message: 'Type de taxe supprimé avec succès',
       confirm_delete: 'Vous ne pourrez pas récupérer ce type de taxe',
       already_in_use: 'La taxe est déjà utilisée'
     },
@@ -653,7 +653,7 @@ export default {
       add_new_category: 'Ajouter une nouvelle catégorie',
       category_name: 'Nom de catégorie',
       category_description: 'La description',
-      created_message: 'Catégorie créée avec succès',
+      created_message: 'Catégorie de dépenses créée avec succès',
       deleted_message: 'La catégorie de dépenses a été supprimée avec succès',
       updated_message: 'Catégorie de dépenses mise à jour avec succès',
       confirm_delete: 'Vous ne pourrez pas récupérer cette catégorie de dépenses',
diff --git a/resources/assets/js/views/customers/Create.vue b/resources/assets/js/views/customers/Create.vue
index 8b831584..27125885 100644
--- a/resources/assets/js/views/customers/Create.vue
+++ b/resources/assets/js/views/customers/Create.vue
@@ -84,16 +84,11 @@
               <div class="form-group">
                 <label class="form-label">{{ $t('customers.phone') }}</label>
                 <base-input
-                  :invalid="$v.formData.phone.$error"
                   v-model.trim="formData.phone"
                   type="text"
                   name="phone"
                   tab-index="4"
-                  @input="$v.formData.phone.$touch()"
                 />
-                <div v-if="$v.formData.phone.$error">
-                  <span v-if="!$v.formData.phone.numeric" class="text-danger">{{ $tc('validation.numbers_only') }}</span>
-                </div>
               </div>
               <div class="form-group">
                 <label class="form-label">{{ $t('customers.website') }}</label>
@@ -196,16 +191,11 @@
               <div class="form-group">
                 <label class="form-label">{{ $t('customers.phone') }}</label>
                 <base-input
-                  :invalid="$v.billing.phone.$error"
                   v-model.trim="billing.phone"
                   type="text"
                   name="phone"
                   tab-index="13"
-                  @input="$v.billing.phone.$touch()"
                 />
-                <div v-if="$v.billing.phone.$error">
-                  <span v-if="!$v.billing.phone.numberic" class="text-danger">{{ $tc('validation.numbers_only') }}</span>
-                </div>
               </div>
               <div class="form-group">
                 <label class="form-label">{{ $t('customers.zip_code') }}</label>
@@ -315,16 +305,11 @@
               <div class="form-group">
                 <label class="form-label">{{ $t('customers.phone') }}</label>
                 <base-input
-                  :invalid="$v.shipping.phone.$error"
                   v-model.trim="shipping.phone"
                   type="text"
                   name="phone"
                   tab-index="21"
-                  @input="$v.shipping.phone.$touch()"
                 />
-                <div v-if="$v.shipping.phone.$error">
-                  <span v-if="!$v.shipping.phone.numberic" class="text-danger">{{ $tc('validation.numbers_only') }}</span>
-                </div>
               </div>
               <div class="form-group">
                 <label class="form-label">{{ $t('customers.zip_code') }}</label>
@@ -432,17 +417,11 @@ export default {
       email: {
         email
       },
-      phone: {
-        numeric
-      },
       website: {
         url
       }
     },
     billing: {
-      phone: {
-        numeric
-      },
       address_street_1: {
         maxLength: maxLength(255)
       },
@@ -451,9 +430,6 @@ export default {
       }
     },
     shipping: {
-      phone: {
-        numeric
-      },
       address_street_1: {
         maxLength: maxLength(255)
       },
@@ -608,16 +584,20 @@ export default {
           this.formData.currency_id = this.currency.id
         }
         this.isLoading = true
-        let response = await this.updateCustomer(this.formData)
-
-        if (response.data) {
-          window.toastr['success'](this.$t('customers.updated_message'))
-          this.$router.push('/admin/customers')
-          this.isLoading = false
-          return true
+        try {
+          let response = await this.updateCustomer(this.formData)
+          if (response.data) {
+            window.toastr['success'](this.$t('customers.updated_message'))
+            this.$router.push('/admin/customers')
+            this.isLoading = false
+            return true
+          }
+        } catch (err) {
+          if (err.response.data.errors.email) {
+            this.isLoading = false
+            window.toastr['error'](this.$t('validation.email_already_taken'))
+          }
         }
-
-        window.toastr['error'](response.data.error)
       } else {
         this.isLoading = true
         if (this.currency) {
diff --git a/resources/assets/js/views/payments/Create.vue b/resources/assets/js/views/payments/Create.vue
index 1a0bea01..d31c5ab0 100644
--- a/resources/assets/js/views/payments/Create.vue
+++ b/resources/assets/js/views/payments/Create.vue
@@ -246,14 +246,19 @@ export default {
   watch: {
     customer (newValue) {
       this.formData.user_id = newValue.id
+      this.invoice = null
+      this.formData.amount = 0
+      this.invoiceList = []
       if (!this.isEdit) {
         this.fetchCustomerInvoices(newValue.id)
       }
     },
     invoice (newValue) {
-      this.formData.invoice_id = newValue.id
-      if (!this.isEdit) {
-        this.setPaymentAmountByInvoiceData(newValue.id)
+      if (newValue) {
+        this.formData.invoice_id = newValue.id
+        if (!this.isEdit) {
+          this.setPaymentAmountByInvoiceData(newValue.id)
+        }
       }
     }
   },