diff --git a/InvenTree/part/migrations/0048_auto_20200902_1404.py b/InvenTree/part/migrations/0048_auto_20200902_1404.py
new file mode 100644
index 0000000000..bd163fa41d
--- /dev/null
+++ b/InvenTree/part/migrations/0048_auto_20200902_1404.py
@@ -0,0 +1,48 @@
+# Generated by Django 3.0.7 on 2020-09-02 14:04
+
+import InvenTree.fields
+import InvenTree.validators
+
+import markdownx
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('part', '0047_auto_20200808_0715'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='part',
+            name='IPN',
+            field=models.CharField(blank=True, help_text='Internal Part Number', max_length=100, null=True, validators=[InvenTree.validators.validate_part_ipn]),
+        ),
+        migrations.AlterField(
+            model_name='part',
+            name='keywords',
+            field=models.CharField(blank=True, help_text='Part keywords to improve visibility in search results', max_length=250, null=True),
+        ),
+        migrations.AlterField(
+            model_name='part',
+            name='link',
+            field=InvenTree.fields.InvenTreeURLField(blank=True, help_text='Link to extenal URL', null=True),
+        ),
+        migrations.AlterField(
+            model_name='part',
+            name='revision',
+            field=models.CharField(blank=True, help_text='Part revision or version number', max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name='part',
+            name='notes',
+            field=markdownx.models.MarkdownxField(blank=True, help_text='Part notes - supports Markdown formatting', null=True),
+        ),
+        migrations.AlterField(
+            model_name='part',
+            name='units',
+            field=models.CharField(blank=True, default='', help_text='Stock keeping units for this part', max_length=20, null=True),
+        ),
+    ]
diff --git a/InvenTree/part/models.py b/InvenTree/part/models.py
index fea2f56f12..18f10a902d 100644
--- a/InvenTree/part/models.py
+++ b/InvenTree/part/models.py
@@ -497,18 +497,18 @@ class Part(MPTTModel):
 
     description = models.CharField(max_length=250, blank=False, help_text=_('Part description'))
 
-    keywords = models.CharField(max_length=250, blank=True, help_text=_('Part keywords to improve visibility in search results'))
+    keywords = models.CharField(max_length=250, blank=True, null=True, help_text=_('Part keywords to improve visibility in search results'))
 
     category = TreeForeignKey(PartCategory, related_name='parts',
                               null=True, blank=True,
                               on_delete=models.DO_NOTHING,
                               help_text=_('Part category'))
 
-    IPN = models.CharField(max_length=100, blank=True, help_text=_('Internal Part Number'), validators=[validators.validate_part_ipn])
+    IPN = models.CharField(max_length=100, blank=True, null=True, help_text=_('Internal Part Number'), validators=[validators.validate_part_ipn])
 
-    revision = models.CharField(max_length=100, blank=True, help_text=_('Part revision or version number'))
+    revision = models.CharField(max_length=100, blank=True, null=True, help_text=_('Part revision or version number'))
 
-    link = InvenTreeURLField(blank=True, help_text=_('Link to extenal URL'))
+    link = InvenTreeURLField(blank=True, null=True, help_text=_('Link to extenal URL'))
 
     image = StdImageField(
         upload_to=rename_part_image,
@@ -569,7 +569,7 @@ class Part(MPTTModel):
 
     minimum_stock = models.PositiveIntegerField(default=0, validators=[MinValueValidator(0)], help_text=_('Minimum allowed stock level'))
 
-    units = models.CharField(max_length=20, default="", blank=True, help_text=_('Stock keeping units for this part'))
+    units = models.CharField(max_length=20, default="", blank=True, null=True, help_text=_('Stock keeping units for this part'))
 
     assembly = models.BooleanField(default=False, verbose_name='Assembly', help_text=_('Can this part be built from other parts?'))
 
@@ -585,7 +585,7 @@ class Part(MPTTModel):
 
     virtual = models.BooleanField(default=False, help_text=_('Is this a virtual part, such as a software product or license?'))
 
-    notes = MarkdownxField(blank=True, help_text=_('Part notes - supports Markdown formatting'))
+    notes = MarkdownxField(blank=True, null=True, help_text=_('Part notes - supports Markdown formatting'))
 
     bom_checksum = models.CharField(max_length=128, blank=True, help_text=_('Stored BOM checksum'))