POS Profile validation message rephrased (#11934)

* pos validation message improvised

* removed unused field
diff --git a/erpnext/accounts/doctype/pos_profile/pos_profile.js b/erpnext/accounts/doctype/pos_profile/pos_profile.js
index 25aff13..b62d9b0 100755
--- a/erpnext/accounts/doctype/pos_profile/pos_profile.js
+++ b/erpnext/accounts/doctype/pos_profile/pos_profile.js
@@ -106,11 +106,6 @@
 	};
 };
 
-
-cur_frm.fields_dict.user.get_query = function(doc,cdt,cdn) {
-	return{	query:"frappe.core.doctype.user.user.user_query"};
-};
-
 cur_frm.fields_dict.write_off_account.get_query = function(doc) {
 	return{
 		filters:{
diff --git a/erpnext/accounts/doctype/pos_profile/pos_profile.json b/erpnext/accounts/doctype/pos_profile/pos_profile.json
index 6c09c6e..e2a6b53 100644
--- a/erpnext/accounts/doctype/pos_profile/pos_profile.json
+++ b/erpnext/accounts/doctype/pos_profile/pos_profile.json
@@ -107,38 +107,6 @@
    "bold": 0, 
    "collapsible": 0, 
    "columns": 0, 
-   "fieldname": "user", 
-   "fieldtype": "Link", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 1, 
-   "in_standard_filter": 0, 
-   "label": "Applicable for User", 
-   "length": 0, 
-   "no_copy": 0, 
-   "oldfieldname": "user", 
-   "oldfieldtype": "Link", 
-   "options": "User", 
-   "permlevel": 0, 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 0, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 1, 
-   "unique": 0
-  }, 
-  {
-   "allow_bulk_edit": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
    "fieldname": "naming_series", 
    "fieldtype": "Select", 
    "hidden": 0, 
@@ -1508,7 +1476,7 @@
  "issingle": 0, 
  "istable": 0, 
  "max_attachments": 0, 
- "modified": "2017-11-24 14:08:09.184226", 
+ "modified": "2017-12-11 17:30:45.198147", 
  "modified_by": "Administrator", 
  "module": "Accounts", 
  "name": "POS Profile", 
diff --git a/erpnext/accounts/doctype/pos_profile/pos_profile.py b/erpnext/accounts/doctype/pos_profile/pos_profile.py
index 5101ffd..5710bd4 100644
--- a/erpnext/accounts/doctype/pos_profile/pos_profile.py
+++ b/erpnext/accounts/doctype/pos_profile/pos_profile.py
@@ -31,8 +31,8 @@
 				msgprint(_("Already set default in pos profile {0} for user {1}, kindly disabled default")
 					.format(res[0][0], row.user), raise_exception=1)
 			elif not row.default and not res:
-				msgprint(_("Row {0}: set atleast one default pos profile for user {1}")
-					.format(row.idx, row.user), raise_exception=1)
+				msgprint(_("User {0} doesn't have any default POS Profile. Check Default at Row {1} for this User.")
+					.format(row.user, row.idx), raise_exception=1)
 
 	def validate_all_link_fields(self):
 		accounts = {"Account": [self.income_account,
@@ -83,12 +83,12 @@
 		frappe.defaults.clear_default("is_pos")
 
 		if not include_current_pos:
-			condition = " where name != '%s'" % self.name.replace("'", "\'")
+			condition = " where pfu.name != '%s' and pfu.default = 1 " % self.name.replace("'", "\'")
 		else:
-			condition = ""
+			condition = " where pfu.default = 1 "
 
-		pos_view_users = frappe.db.sql_list("""select user
-			from `tabPOS Profile` {0}""".format(condition))
+		pos_view_users = frappe.db.sql_list("""select pfu.user
+			from `tabPOS Profile User` as pfu {0}""".format(condition))
 
 		for user in pos_view_users:
 			if user: