fix: Fixed customer address variable, sales invoice item field currency issue

(cherry picked from commit 904010ab645fdb16f09072c062269945f7747712)
diff --git a/erpnext/erpnext_integrations/doctype/taxjar_settings/taxjar_settings.py b/erpnext/erpnext_integrations/doctype/taxjar_settings/taxjar_settings.py
index bfc5e6f..b9f24b6 100644
--- a/erpnext/erpnext_integrations/doctype/taxjar_settings/taxjar_settings.py
+++ b/erpnext/erpnext_integrations/doctype/taxjar_settings/taxjar_settings.py
@@ -80,9 +80,9 @@
 			dict(fieldname='product_tax_category', fieldtype='Link', insert_after='description', options='Product Tax Category',
 				label='Product Tax Category', fetch_from='item_code.product_tax_category'),
 			dict(fieldname='tax_collectable', fieldtype='Currency', insert_after='net_amount',
-				label='Tax Collectable', read_only=1),
+				label='Tax Collectable', read_only=1, options='currency'),
 			dict(fieldname='taxable_amount', fieldtype='Currency', insert_after='tax_collectable',
-				label='Taxable Amount', read_only=1)
+				label='Taxable Amount', read_only=1, options='currency')
 		],
 		'Item': [
 			dict(fieldname='product_tax_category', fieldtype='Link', insert_after='item_group', options='Product Tax Category',
diff --git a/erpnext/erpnext_integrations/taxjar_integration.py b/erpnext/erpnext_integrations/taxjar_integration.py
index 2a7243c..39aac0c 100644
--- a/erpnext/erpnext_integrations/taxjar_integration.py
+++ b/erpnext/erpnext_integrations/taxjar_integration.py
@@ -262,7 +262,7 @@
 	if doc.shipping_address_name:
 		shipping_address = frappe.get_doc("Address", doc.shipping_address_name)
 	elif doc.customer_address:
-		shipping_address = frappe.get_doc("Address", doc.customer_address_name)
+		shipping_address = frappe.get_doc("Address", doc.customer_address)
 	else:
 		shipping_address = get_company_address_details(doc)
 
diff --git a/erpnext/patches/v13_0/custom_fields_for_taxjar_integration.py b/erpnext/patches/v13_0/custom_fields_for_taxjar_integration.py
index fba9e2c..1625e4f 100644
--- a/erpnext/patches/v13_0/custom_fields_for_taxjar_integration.py
+++ b/erpnext/patches/v13_0/custom_fields_for_taxjar_integration.py
@@ -21,9 +21,9 @@
 			dict(fieldname='product_tax_category', fieldtype='Link', insert_after='description', options='Product Tax Category',
 				label='Product Tax Category', fetch_from='item_code.product_tax_category'),
 			dict(fieldname='tax_collectable', fieldtype='Currency', insert_after='net_amount',
-				label='Tax Collectable', read_only=1),
+				label='Tax Collectable', read_only=1, options='currency'),
 			dict(fieldname='taxable_amount', fieldtype='Currency', insert_after='tax_collectable',
-				label='Taxable Amount', read_only=1)
+				label='Taxable Amount', read_only=1, options='currency')
 		],
 		'Item': [
 			dict(fieldname='product_tax_category', fieldtype='Link', insert_after='item_group', options='Product Tax Category',