diff --git a/InvenTree/InvenTree/fields.py b/InvenTree/InvenTree/fields.py
index 8d9ab77463..462d2b0e0e 100644
--- a/InvenTree/InvenTree/fields.py
+++ b/InvenTree/InvenTree/fields.py
@@ -14,8 +14,10 @@ from django.core import validators
 from django import forms
 
 from decimal import Decimal
+
 from djmoney.models.fields import MoneyField as ModelMoneyField
 from djmoney.forms.fields import MoneyField
+from djmoney.models.validators import MinMoneyValidator
 
 import InvenTree.helpers
 import common.settings
@@ -47,7 +49,10 @@ def money_kwargs():
 
 
 class InvenTreeModelMoneyField(ModelMoneyField):
-    """ custom MoneyField for clean migrations while using dynamic currency settings """
+    """
+    Custom MoneyField for clean migrations while using dynamic currency settings
+    """
+    
     def __init__(self, **kwargs):
         # detect if creating migration
         if 'makemigrations' in sys.argv:
@@ -58,6 +63,16 @@ class InvenTreeModelMoneyField(ModelMoneyField):
             # set defaults
             kwargs.update(money_kwargs())
 
+        # Set a minimum value validator
+        validators = kwargs.get('validators', [])
+
+        if len(validators) == 0:
+            validators.append(
+                MinMoneyValidator(0),
+            )
+
+        kwargs['validators'] = validators
+
         super().__init__(**kwargs)
 
     def formfield(self, **kwargs):
diff --git a/InvenTree/order/api.py b/InvenTree/order/api.py
index 446b5a4313..5337676672 100644
--- a/InvenTree/order/api.py
+++ b/InvenTree/order/api.py
@@ -254,10 +254,12 @@ class POLineItemList(generics.ListCreateAPIView):
     ]
 
 
-class POLineItemDetail(generics.RetrieveUpdateAPIView):
-    """ API endpoint for detail view of a PurchaseOrderLineItem object """
+class POLineItemDetail(generics.RetrieveUpdateDestroyAPIView):
+    """
+    Detail API endpoint for PurchaseOrderLineItem object
+    """
 
-    queryset = PurchaseOrderLineItem
+    queryset = PurchaseOrderLineItem.objects.all()
     serializer_class = POLineItemSerializer
 
 
diff --git a/InvenTree/order/serializers.py b/InvenTree/order/serializers.py
index e7b71e6aa0..15e9e5ef9b 100644
--- a/InvenTree/order/serializers.py
+++ b/InvenTree/order/serializers.py
@@ -5,13 +5,16 @@ JSON serializers for the Order API
 # -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
-from rest_framework import serializers
-
-from sql_util.utils import SubqueryCount
+from django.utils.translation import ugettext_lazy as _
 
 from django.db.models import Case, When, Value
 from django.db.models import BooleanField
 
+from rest_framework import serializers
+from sql_util.utils import SubqueryCount
+
+import djmoney.settings
+
 from InvenTree.serializers import InvenTreeModelSerializer
 from InvenTree.serializers import InvenTreeAttachmentSerializerField
 
@@ -125,6 +128,11 @@ class POLineItemSerializer(InvenTreeModelSerializer):
 
     destination = LocationBriefSerializer(source='get_destination', read_only=True)
 
+    purchase_price_currency = serializers.ChoiceField(
+        choices=djmoney.settings.CURRENCY_CHOICES,
+        help_text=_('Purchase price currency'),
+    )
+
     class Meta:
         model = PurchaseOrderLineItem
 
diff --git a/InvenTree/order/templates/order/po_lineitem_delete.html b/InvenTree/order/templates/order/po_lineitem_delete.html
deleted file mode 100644
index 1d9f80d137..0000000000
--- a/InvenTree/order/templates/order/po_lineitem_delete.html
+++ /dev/null
@@ -1,6 +0,0 @@
-{% extends "modal_delete_form.html" %}
-{% load i18n %}
-
-{% block pre_form_content %}
-{% trans "Are you sure you wish to delete this line item?" %}
-{% endblock %}
\ No newline at end of file
diff --git a/InvenTree/order/templates/order/purchase_order_detail.html b/InvenTree/order/templates/order/purchase_order_detail.html
index e5542f5816..ba468301cc 100644
--- a/InvenTree/order/templates/order/purchase_order_detail.html
+++ b/InvenTree/order/templates/order/purchase_order_detail.html
@@ -73,16 +73,28 @@ function setupCallbacks() {
     table.find(".button-line-edit").click(function() {
         var pk = $(this).attr('pk');
 
-        launchModalForm(`/order/purchase-order/line/${pk}/edit/`, {
-            success: reloadTable,
+        constructForm(`/api/order/po-line/${pk}/`, {
+            fields: {
+                part: {},
+                quantity: {},
+                reference: {},
+                purchase_price: {},
+                purchase_price_currency: {},
+                destination: {},
+                notes: {},
+            },
+            title: '{% trans "Edit Line Item" %}',
+            onSuccess: reloadTable,
         });
     });
 
     table.find(".button-line-delete").click(function() {
         var pk = $(this).attr('pk');
 
-        launchModalForm(`/order/purchase-order/line/${pk}/delete/`, {
-            success: reloadTable,
+        constructForm(`/api/order/po-line/${pk}/`, {
+            method: 'DELETE',
+            title: '{% trans "Delete Line Item" %}',
+            onSuccess: reloadTable,
         });
     });
     {% endif %}
diff --git a/InvenTree/order/urls.py b/InvenTree/order/urls.py
index 7d474c7db2..fd1b3f89dc 100644
--- a/InvenTree/order/urls.py
+++ b/InvenTree/order/urls.py
@@ -36,10 +36,6 @@ purchase_order_urls = [
 
     url(r'^line/', include([
         url(r'^new/', views.POLineItemCreate.as_view(), name='po-line-item-create'),
-        url(r'^(?P<pk>\d+)/', include([
-            url(r'^edit/', views.POLineItemEdit.as_view(), name='po-line-item-edit'),
-            url(r'^delete/', views.POLineItemDelete.as_view(), name='po-line-item-delete'),
-        ])),
     ])),
 
     # Display complete list of purchase orders
diff --git a/InvenTree/order/views.py b/InvenTree/order/views.py
index 6914b4fe19..9e4cd2f1dd 100644
--- a/InvenTree/order/views.py
+++ b/InvenTree/order/views.py
@@ -1213,38 +1213,6 @@ class SOLineItemEdit(AjaxUpdateView):
         return form
 
 
-class POLineItemEdit(AjaxUpdateView):
-    """ View for editing a PurchaseOrderLineItem object in a modal form.
-    """
-
-    model = PurchaseOrderLineItem
-    form_class = order_forms.EditPurchaseOrderLineItemForm
-    ajax_template_name = 'modal_form.html'
-    ajax_form_title = _('Edit Line Item')
-
-    def get_form(self):
-        form = super().get_form()
-
-        # Prevent user from editing order once line item is assigned
-        form.fields['order'].widget = HiddenInput()
-
-        return form
-
-
-class POLineItemDelete(AjaxDeleteView):
-    """ View for deleting a PurchaseOrderLineItem object in a modal form
-    """
-
-    model = PurchaseOrderLineItem
-    ajax_form_title = _('Delete Line Item')
-    ajax_template_name = 'order/po_lineitem_delete.html'
-
-    def get_data(self):
-        return {
-            'danger': _('Deleted line item'),
-        }
-
-
 class SOLineItemDelete(AjaxDeleteView):
 
     model = SalesOrderLineItem
diff --git a/InvenTree/templates/js/forms.js b/InvenTree/templates/js/forms.js
index 5ac5dc2a38..ac3bcefd04 100644
--- a/InvenTree/templates/js/forms.js
+++ b/InvenTree/templates/js/forms.js
@@ -1267,7 +1267,7 @@ function constructField(name, parameters, options) {
     var extra = parameters.prefix != null;
     
     // Some fields can have 'clear' inputs associated with them
-    if (!parameters.required) {
+    if (!parameters.required && !parameters.read_only) {
         switch (parameters.type) {
             case 'string':
             case 'url':