diff --git a/erpnext/support/doctype/service_level_agreement/service_level_agreement.js b/erpnext/support/doctype/service_level_agreement/service_level_agreement.js
index 1d486f4..7aeaae4 100644
--- a/erpnext/support/doctype/service_level_agreement/service_level_agreement.js
+++ b/erpnext/support/doctype/service_level_agreement/service_level_agreement.js
@@ -2,28 +2,5 @@
 // For license information, please see license.txt
 
 frappe.ui.form.on('Service Level Agreement', {
-	service_level: function(frm) {
-		frm.fields_dict.support_and_resolution.grid.remove_all();
-		frappe.call({
-			"method": "frappe.client.get",
-			args: {
-				doctype: "Service Level",
-				name: frm.doc.service_level
-			},
-			callback: function(data){
-				let count = Math.max(data.message.priorities.length, data.message.support_and_resolution.length);
-				let i = 0;
-				while (i < count){
-					if (data.message.priorities[i]) {
-						frm.add_child("priorities", data.message.priorities[i]);
-					}
-					if (data.message.support_and_resolution[i]) {
-						frm.add_child("support_and_resolution", data.message.support_and_resolution[i]);
-					}
-					i++;
-				}
-				frm.refresh();
-			}
-		});
-	},
+
 });
diff --git a/erpnext/support/doctype/service_level_agreement/service_level_agreement.json b/erpnext/support/doctype/service_level_agreement/service_level_agreement.json
index 9a83ca7..3725e15 100644
--- a/erpnext/support/doctype/service_level_agreement/service_level_agreement.json
+++ b/erpnext/support/doctype/service_level_agreement/service_level_agreement.json
@@ -1,4 +1,5 @@
 {
+ "actions": [],
  "autoname": "format:SLA-{service_level}-{####}",
  "creation": "2018-12-26 21:08:15.448812",
  "doctype": "DocType",
@@ -6,12 +7,12 @@
  "engine": "InnoDB",
  "field_order": [
   "enable",
+  "section_break_2",
   "service_level",
   "default_service_level_agreement",
-  "holiday_list",
   "column_break_2",
   "employee_group",
-  "default_priority",
+  "holiday_list",
   "entity_section",
   "entity_type",
   "column_break_10",
@@ -28,42 +29,30 @@
  ],
  "fields": [
   {
-   "default": "0",
-   "depends_on": "eval: !doc.customer;",
-   "fieldname": "default_service_level_agreement",
-   "fieldtype": "Check",
-   "label": "Default Service Level Agreement"
-  },
-  {
    "fieldname": "service_level",
-   "fieldtype": "Link",
+   "fieldtype": "Data",
    "in_list_view": 1,
    "in_standard_filter": 1,
    "label": "Service Level",
-   "options": "Service Level",
    "reqd": 1
   },
   {
-   "fetch_from": "service_level.holiday_list",
    "fieldname": "holiday_list",
    "fieldtype": "Link",
    "label": "Holiday List",
-   "options": "Holiday List",
-   "read_only": 1
+   "options": "Holiday List"
   },
   {
    "fieldname": "column_break_2",
    "fieldtype": "Column Break"
   },
   {
-   "fetch_from": "service_level.employee_group",
    "fieldname": "employee_group",
    "fieldtype": "Link",
    "in_list_view": 1,
    "in_standard_filter": 1,
    "label": "Employee Group",
-   "options": "Employee Group",
-   "read_only": 1
+   "options": "Employee Group"
   },
   {
    "fieldname": "agreement_details_section",
@@ -112,14 +101,6 @@
    "options": "Service Level Priority"
   },
   {
-   "fetch_from": "service_level.default_priority",
-   "fieldname": "default_priority",
-   "fieldtype": "Link",
-   "label": "Default Priority",
-   "options": "Issue Priority",
-   "read_only": 1
-  },
-  {
    "default": "1",
    "fieldname": "active",
    "fieldtype": "Check",
@@ -156,9 +137,20 @@
    "fieldname": "enable",
    "fieldtype": "Check",
    "label": "Enable"
+  },
+  {
+   "fieldname": "section_break_2",
+   "fieldtype": "Section Break"
+  },
+  {
+   "default": "0",
+   "fieldname": "default_service_level_agreement",
+   "fieldtype": "Check",
+   "label": "Default Service Level Agreement"
   }
  ],
- "modified": "2019-07-09 17:22:16.402939",
+ "links": [],
+ "modified": "2020-04-28 14:10:18.767202",
  "modified_by": "Administrator",
  "module": "Support",
  "name": "Service Level Agreement",
diff --git a/erpnext/support/doctype/service_level_agreement/service_level_agreement.py b/erpnext/support/doctype/service_level_agreement/service_level_agreement.py
index a399c58..9fa0e23 100644
--- a/erpnext/support/doctype/service_level_agreement/service_level_agreement.py
+++ b/erpnext/support/doctype/service_level_agreement/service_level_agreement.py
@@ -6,11 +6,85 @@
 import frappe
 from frappe.model.document import Document
 from frappe import _
-from frappe.utils import getdate
+from frappe.utils import getdate, get_weekdays
+from datetime import datetime
 
 class ServiceLevelAgreement(Document):
 
 	def validate(self):
+		self.validate_doc()
+		self.check_priorities()
+		self.check_support_and_resolution()
+
+	def check_priorities(self):
+		default_priority = []
+		priorities = []
+
+		for priority in self.priorities:
+			# Check if response and resolution time is set for every priority
+			if not (priority.response_time or priority.resolution_time):
+				frappe.throw(_("Set Response Time and Resolution for Priority {0} at index {1}.").format(priority.priority, priority.idx))
+
+			priorities.append(priority.priority)
+
+			if priority.default_priority:
+				default_priority.append(priority.default_priority)
+
+			if priority.response_time_period == "Hour":
+				response = priority.response_time * 0.0416667
+			elif priority.response_time_period == "Day":
+				response = priority.response_time
+			elif priority.response_time_period == "Week":
+				response = priority.response_time * 7
+
+			if priority.resolution_time_period == "Hour":
+				resolution = priority.resolution_time * 0.0416667
+			elif priority.resolution_time_period == "Day":
+				resolution = priority.resolution_time
+			elif priority.resolution_time_period == "Week":
+				resolution = priority.resolution_time * 7
+
+			if response > resolution:
+				frappe.throw(_("Response Time for {0} at index {1} can't be greater than Resolution Time.").format(priority.priority, priority.idx))
+
+		# Check if repeated priority
+		if not len(set(priorities)) == len(priorities):
+			repeated_priority = get_repeated(priorities)
+			frappe.throw(_("Priority {0} has been repeated.").format(repeated_priority))
+
+		# Check if repeated default priority
+		if not len(set(default_priority)) == len(default_priority):
+			frappe.throw(_("Select only one Priority as Default."))
+
+		# set default priority from priorities
+		try:
+			self.default_priority = next(d.priority for d in self.priorities if d.default_priority)
+		except Exception:
+			frappe.throw(_("Select a Default Priority."))
+
+	def check_support_and_resolution(self):
+		week = get_weekdays()
+		support_days = []
+
+		for support_and_resolution in self.support_and_resolution:
+			# Check if start and end time is set for every support day
+			if not (support_and_resolution.start_time or support_and_resolution.end_time):
+				frappe.throw(_("Set Start Time and End Time for  \
+					Support Day {0} at index {1}.".format(support_and_resolution.workday, support_and_resolution.idx)))
+
+			support_days.append(support_and_resolution.workday)
+			support_and_resolution.idx = week.index(support_and_resolution.workday) + 1
+
+			if support_and_resolution.start_time >= support_and_resolution.end_time:
+				frappe.throw(_("Start Time can't be greater than or equal to End Time \
+					for {0}.".format(support_and_resolution.workday)))
+
+		# Check for repeated workday
+		if not len(set(support_days)) == len(support_days):
+			repeated_days = get_repeated(support_days)
+			frappe.throw(_("Workday {0} has been repeated.").format(repeated_days))
+
+	def validate_doc(self):
 		if not frappe.db.get_single_value("Support Settings", "track_service_level_agreement"):
 			frappe.throw(_("Service Level Agreement tracking is not enabled."))
 
@@ -110,4 +184,15 @@
 	return {
 		"priority": [priority.priority for priority in frappe.get_list("Service Level Priority", filters={"parent": name}, fields=["priority"])],
 		"service_level_agreements": [d.name for d in frappe.get_list("Service Level Agreement", filters=filters, or_filters=or_filters)]
-	}
\ No newline at end of file
+	}
+
+def get_repeated(values):
+	unique_list = []
+	diff = []
+	for value in values:
+		if value not in unique_list:
+			unique_list.append(str(value))
+		else:
+			if value not in diff:
+				diff.append(str(value))
+	return " ".join(diff)
diff --git a/erpnext/support/doctype/service_level_priority/service_level_priority.json b/erpnext/support/doctype/service_level_priority/service_level_priority.json
index cd87a1c..f56008e 100644
--- a/erpnext/support/doctype/service_level_priority/service_level_priority.json
+++ b/erpnext/support/doctype/service_level_priority/service_level_priority.json
@@ -1,4 +1,5 @@
 {
+ "actions": [],
  "creation": "2019-05-04 05:54:03.658991",
  "doctype": "DocType",
  "editable_grid": 1,
@@ -16,7 +17,7 @@
  ],
  "fields": [
   {
-   "columns": 2,
+   "columns": 1,
    "fieldname": "priority",
    "fieldtype": "Link",
    "in_list_view": 1,
@@ -28,14 +29,7 @@
    "fieldtype": "Section Break"
   },
   {
-   "columns": 1,
-   "fieldname": "response_time",
-   "fieldtype": "Int",
-   "in_list_view": 1,
-   "label": "Response Time"
-  },
-  {
-   "columns": 1,
+   "columns": 2,
    "fieldname": "resolution_time",
    "fieldtype": "Int",
    "in_list_view": 1,
@@ -66,15 +60,24 @@
    "fieldtype": "Column Break"
   },
   {
+   "columns": 1,
    "default": "0",
    "fieldname": "default_priority",
    "fieldtype": "Check",
    "in_list_view": 1,
    "label": "Default Priority"
+  },
+  {
+   "columns": 2,
+   "fieldname": "response_time",
+   "fieldtype": "Int",
+   "in_list_view": 1,
+   "label": "First Response Time"
   }
  ],
  "istable": 1,
- "modified": "2019-05-21 06:54:42.674377",
+ "links": [],
+ "modified": "2020-04-24 14:50:13.774308",
  "modified_by": "Administrator",
  "module": "Support",
  "name": "Service Level Priority",
diff --git a/erpnext/support/doctype/support_settings/support_settings.json b/erpnext/support/doctype/support_settings/support_settings.json
index be9e064..3f52181 100644
--- a/erpnext/support/doctype/support_settings/support_settings.json
+++ b/erpnext/support/doctype/support_settings/support_settings.json
@@ -1,4 +1,5 @@
 {
+ "actions": [],
  "creation": "2017-02-17 13:07:35.686409",
  "doctype": "DocType",
  "editable_grid": 1,
@@ -128,7 +129,8 @@
   }
  ],
  "issingle": 1,
- "modified": "2019-07-10 22:52:39.663873",
+ "links": [],
+ "modified": "2020-04-28 14:11:15.117019",
  "modified_by": "Administrator",
  "module": "Support",
  "name": "Support Settings",