diff --git a/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.js b/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.js
index 2f8081b..73c6290 100644
--- a/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.js
+++ b/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.js
@@ -4,7 +4,7 @@
 frappe.ui.form.on('POS Invoice Merge Log', {
 	setup: function(frm) {
 		frm.set_query("pos_invoice", "pos_invoices", doc => {
-			return{
+			return {
 				filters: {
 					'docstatus': 1,
 					'customer': doc.customer,
@@ -12,5 +12,10 @@
 				}
 			}
 		});
+	},
+
+	merge_invoices_based_on: function(frm) {
+		frm.set_value('customer', '');
+		frm.set_value('customer_group', '');
 	}
 });
diff --git a/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.json b/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.json
index da2984f..d762087 100644
--- a/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.json
+++ b/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.json
@@ -6,9 +6,11 @@
  "engine": "InnoDB",
  "field_order": [
   "posting_date",
-  "customer",
+  "merge_invoices_based_on",
   "column_break_3",
   "pos_closing_entry",
+  "customer",
+  "customer_group",
   "section_break_3",
   "pos_invoices",
   "references_section",
@@ -88,12 +90,27 @@
    "fieldtype": "Link",
    "label": "POS Closing Entry",
    "options": "POS Closing Entry"
+  },
+  {
+   "fieldname": "merge_invoices_based_on",
+   "fieldtype": "Select",
+   "label": "Merge Invoices Based On",
+   "options": "Customer\nCustomer Group",
+   "reqd": 1
+  },
+  {
+   "depends_on": "eval:doc.merge_invoices_based_on == 'Customer Group'",
+   "fieldname": "customer_group",
+   "fieldtype": "Link",
+   "label": "Customer Group",
+   "mandatory_depends_on": "eval:doc.merge_invoices_based_on == 'Customer Group'",
+   "options": "Customer Group"
   }
  ],
  "index_web_pages_for_search": 1,
  "is_submittable": 1,
  "links": [],
- "modified": "2020-12-01 11:53:57.267579",
+ "modified": "2021-09-14 11:17:19.001142",
  "modified_by": "Administrator",
  "module": "Accounts",
  "name": "POS Invoice Merge Log",
diff --git a/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.py b/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.py
index 0be8ca7..9dae3a7 100644
--- a/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.py
+++ b/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.py
@@ -23,6 +23,9 @@
 		self.validate_pos_invoice_status()
 
 	def validate_customer(self):
+		if self.merge_invoices_based_on == 'Customer Group':
+			return
+
 		for d in self.pos_invoices:
 			if d.customer != self.customer:
 				frappe.throw(_("Row #{}: POS Invoice {} is not against customer {}").format(d.idx, d.pos_invoice, self.customer))
@@ -124,7 +127,7 @@
 				found = False
 				for i in items:
 					if (i.item_code == item.item_code and not i.serial_no and not i.batch_no and
-						i.uom == item.uom and i.net_rate == item.net_rate):
+						i.uom == item.uom and i.net_rate == item.net_rate and i.warehouse == item.warehouse):
 						found = True
 						i.qty = i.qty + item.qty
 
@@ -172,6 +175,11 @@
 		invoice.discount_amount = 0.0
 		invoice.taxes_and_charges = None
 		invoice.ignore_pricing_rule = 1
+		invoice.customer = self.customer
+
+		if self.merge_invoices_based_on == 'Customer Group':
+			invoice.flags.ignore_pos_profile = True
+			invoice.pos_profile = ''
 
 		return invoice
 
@@ -228,7 +236,7 @@
 	return pos_invoices
 
 def get_invoice_customer_map(pos_invoices):
-	# pos_invoice_customer_map = { 'Customer 1': [{}, {}, {}], 'Custoemr 2' : [{}] }
+	# pos_invoice_customer_map = { 'Customer 1': [{}, {}, {}], 'Customer 2' : [{}] }
 	pos_invoice_customer_map = {}
 	for invoice in pos_invoices:
 		customer = invoice.get('customer')
diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
index ec249c2..ca6a77a 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
@@ -499,7 +499,7 @@
 			self.account_for_change_amount = frappe.get_cached_value('Company',  self.company,  'default_cash_account')
 
 		from erpnext.stock.get_item_details import get_pos_profile, get_pos_profile_item_details
-		if not self.pos_profile:
+		if not self.pos_profile and not self.flags.ignore_pos_profile:
 			pos_profile = get_pos_profile(self.company) or {}
 			if not pos_profile:
 				return
diff --git a/erpnext/hooks.py b/erpnext/hooks.py
index be05e35..a8f1617 100644
--- a/erpnext/hooks.py
+++ b/erpnext/hooks.py
@@ -442,7 +442,7 @@
 	"Purchase Receipt Item", "Stock Entry Detail", "Payment Entry Deduction", "Sales Taxes and Charges", "Purchase Taxes and Charges", "Shipping Rule",
 	"Landed Cost Item", "Asset Value Adjustment", "Loyalty Program", "Fee Schedule", "Fee Structure", "Stock Reconciliation",
 	"Travel Request", "Fees", "POS Profile", "Opening Invoice Creation Tool", "Opening Invoice Creation Tool Item", "Subscription",
-	"Subscription Plan"
+	"Subscription Plan", "POS Invoice", "POS Invoice Item"
 ]
 
 regional_overrides = {
diff --git a/erpnext/patches.txt b/erpnext/patches.txt
index 3bc40a1..2148e6e 100644
--- a/erpnext/patches.txt
+++ b/erpnext/patches.txt
@@ -307,3 +307,4 @@
 erpnext.patches.v13_0.replace_supplier_item_group_with_party_specific_item
 erpnext.patches.v13_0.update_dates_in_tax_withholding_category
 erpnext.patches.v14_0.update_opportunity_currency_fields
+erpnext.patches.v13_0.create_accounting_dimensions_in_pos_doctypes
diff --git a/erpnext/patches/v13_0/create_accounting_dimensions_in_pos_doctypes.py b/erpnext/patches/v13_0/create_accounting_dimensions_in_pos_doctypes.py
new file mode 100644
index 0000000..4450108
--- /dev/null
+++ b/erpnext/patches/v13_0/create_accounting_dimensions_in_pos_doctypes.py
@@ -0,0 +1,42 @@
+import frappe
+from frappe.custom.doctype.custom_field.custom_field import create_custom_field
+
+
+def execute():
+	frappe.reload_doc('accounts', 'doctype', 'accounting_dimension')
+	accounting_dimensions = frappe.db.sql("""select fieldname, label, document_type, disabled from
+		`tabAccounting Dimension`""", as_dict=1)
+
+	if not accounting_dimensions:
+		return
+
+	count = 1
+	for d in accounting_dimensions:
+
+		if count % 2 == 0:
+			insert_after_field = 'dimension_col_break'
+		else:
+			insert_after_field = 'accounting_dimensions_section'
+
+		for doctype in ["POS Invoice", "POS Invoice Item"]:
+
+			field = frappe.db.get_value("Custom Field", {"dt": doctype, "fieldname": d.fieldname})
+
+			if field:
+				continue
+			meta = frappe.get_meta(doctype, cached=False)
+			fieldnames = [d.fieldname for d in meta.get("fields")]
+
+			df = {
+				"fieldname": d.fieldname,
+				"label": d.label,
+				"fieldtype": "Link",
+				"options": d.document_type,
+				"insert_after": insert_after_field
+			}
+
+			if df['fieldname'] not in fieldnames:
+				create_custom_field(doctype, df)
+				frappe.clear_cache(doctype=doctype)
+
+		count += 1