chore: clean up layout and code
diff --git a/erpnext/setup/doctype/currency_exchange_settings/currency_exchange_settings.json b/erpnext/setup/doctype/currency_exchange_settings/currency_exchange_settings.json
index bd86242..d3d2304 100644
--- a/erpnext/setup/doctype/currency_exchange_settings/currency_exchange_settings.json
+++ b/erpnext/setup/doctype/currency_exchange_settings/currency_exchange_settings.json
@@ -9,11 +9,11 @@
   "api_endpoint",
   "url",
   "column_break_3",
-  "result_key",
+  "help",
   "section_break_2",
   "req_params",
   "column_break_4",
-  "extra_params"
+  "result_key"
  ],
  "fields": [
   {
@@ -35,17 +35,11 @@
   {
    "fieldname": "req_params",
    "fieldtype": "Table",
-   "label": "Mandatory Parameters",
+   "label": "Parameters",
    "options": "Currency Exchange Settings Details",
    "reqd": 1
   },
   {
-   "fieldname": "extra_params",
-   "fieldtype": "Table",
-   "label": "Additional Parameters",
-   "options": "Currency Exchange Settings Extra Details"
-  },
-  {
    "fieldname": "api_details_section",
    "fieldtype": "Section Break",
    "label": "API Details"
@@ -64,14 +58,20 @@
   {
    "fieldname": "url",
    "fieldtype": "Data",
-   "label": "URL",
+   "label": "Example URL",
    "read_only": 1
+  },
+  {
+   "fieldname": "help",
+   "fieldtype": "HTML",
+   "label": "Help",
+   "options": "<h3>Currency Exchange Settings Help</h3>\n<p>There are 3 variables that could be used within the endpoint, result key and in values of the parameter.</p>\n<p>Exchange rate between {from_currency} and {to_currency} on {transaction_date} is fetched by the API.</p>\n<p>Example: If your endpoint is exchange.com/2021-08-01, then, you will have to input exchange.com/{transaction_date}</p>"
   }
  ],
  "index_web_pages_for_search": 1,
  "issingle": 1,
  "links": [],
- "modified": "2021-09-03 19:09:02.741016",
+ "modified": "2021-09-04 11:41:34.375637",
  "modified_by": "Administrator",
  "module": "Setup",
  "name": "Currency Exchange Settings",
diff --git a/erpnext/setup/doctype/currency_exchange_settings/currency_exchange_settings.py b/erpnext/setup/doctype/currency_exchange_settings/currency_exchange_settings.py
index 1ecb0ff..badd14f 100644
--- a/erpnext/setup/doctype/currency_exchange_settings/currency_exchange_settings.py
+++ b/erpnext/setup/doctype/currency_exchange_settings/currency_exchange_settings.py
@@ -3,29 +3,17 @@
 
 import frappe
 from frappe import _
+from frappe.utils import nowdate
 from frappe.model.document import Document
 
 class CurrencyExchangeSettings(Document):
 	def validate(self):
-		if len(self.req_params) > 3:
-			frappe.throw(_("Make sure no mandatory parameters are repeated."))
-		transaction_date = '2021-08-01'
+		transaction_date = nowdate()
 		from_currency = 'USD'
 		to_currency = 'INR'
-		req_params = {
-			"transaction_date": transaction_date,
-			"from_currency": from_currency,
-			"to_currency": to_currency
-		}
 		params = {}
 		for row in self.req_params:
-			try:
-				params[row.key] = req_params[row.value]
-				req_params.pop(row.value)
-			except:
-				frappe.throw(_("Make sure no mandatory parameters are repeated."))
-		for eparam in self.extra_params:
-			params[eparam.key] = eparam.value.format(
+			params[row.key] = row.value.format(
 				transaction_date=transaction_date,
 				to_currency=to_currency,
 				from_currency=from_currency
@@ -54,4 +42,4 @@
 		if not isinstance(value, (int, float)):
 			frappe.throw(_("Returned exchange rate is neither integer not float."))
 		self.url = response.url
-		frappe.msgprint("Exchange rate of USD to INR on 01-08-2021 is " + str(value))
+		frappe.msgprint("Exchange rate of USD to INR is " + str(value))
diff --git a/erpnext/setup/doctype/currency_exchange_settings_details/currency_exchange_settings_details.json b/erpnext/setup/doctype/currency_exchange_settings_details/currency_exchange_settings_details.json
index dbb886f..886d385 100644
--- a/erpnext/setup/doctype/currency_exchange_settings_details/currency_exchange_settings_details.json
+++ b/erpnext/setup/doctype/currency_exchange_settings_details/currency_exchange_settings_details.json
@@ -19,17 +19,16 @@
   },
   {
    "fieldname": "value",
-   "fieldtype": "Select",
+   "fieldtype": "Data",
    "in_list_view": 1,
    "label": "Value",
-   "options": "\ntransaction_date\nfrom_currency\nto_currency",
    "reqd": 1
   }
  ],
  "index_web_pages_for_search": 1,
  "istable": 1,
  "links": [],
- "modified": "2021-09-03 18:50:47.145457",
+ "modified": "2021-09-04 11:24:21.944002",
  "modified_by": "Administrator",
  "module": "Setup",
  "name": "Currency Exchange Settings Details",
diff --git a/erpnext/setup/doctype/currency_exchange_settings_extra_details/__init__.py b/erpnext/setup/doctype/currency_exchange_settings_extra_details/__init__.py
deleted file mode 100644
index e69de29..0000000
--- a/erpnext/setup/doctype/currency_exchange_settings_extra_details/__init__.py
+++ /dev/null
diff --git a/erpnext/setup/doctype/currency_exchange_settings_extra_details/currency_exchange_settings_extra_details.json b/erpnext/setup/doctype/currency_exchange_settings_extra_details/currency_exchange_settings_extra_details.json
deleted file mode 100644
index f21f9ce..0000000
--- a/erpnext/setup/doctype/currency_exchange_settings_extra_details/currency_exchange_settings_extra_details.json
+++ /dev/null
@@ -1,40 +0,0 @@
-{
- "actions": [],
- "creation": "2021-09-02 15:18:17.888667",
- "doctype": "DocType",
- "editable_grid": 1,
- "engine": "InnoDB",
- "field_order": [
-  "key",
-  "value"
- ],
- "fields": [
-  {
-   "fieldname": "key",
-   "fieldtype": "Data",
-   "in_list_view": 1,
-   "label": "Key",
-   "reqd": 1,
-   "unique": 1
-  },
-  {
-   "fieldname": "value",
-   "fieldtype": "Data",
-   "in_list_view": 1,
-   "label": "Value",
-   "reqd": 1
-  }
- ],
- "index_web_pages_for_search": 1,
- "istable": 1,
- "links": [],
- "modified": "2021-09-03 18:50:28.482851",
- "modified_by": "Administrator",
- "module": "Setup",
- "name": "Currency Exchange Settings Extra Details",
- "owner": "Administrator",
- "permissions": [],
- "sort_field": "modified",
- "sort_order": "DESC",
- "track_changes": 1
-}
\ No newline at end of file
diff --git a/erpnext/setup/doctype/currency_exchange_settings_extra_details/currency_exchange_settings_extra_details.py b/erpnext/setup/doctype/currency_exchange_settings_extra_details/currency_exchange_settings_extra_details.py
deleted file mode 100644
index ee51533..0000000
--- a/erpnext/setup/doctype/currency_exchange_settings_extra_details/currency_exchange_settings_extra_details.py
+++ /dev/null
@@ -1,8 +0,0 @@
-# Copyright (c) 2021, Wahni Green Technologies Pvt. Ltd. and contributors
-# For license information, please see license.txt
-
-# import frappe
-from frappe.model.document import Document
-
-class CurrencyExchangeSettingsExtraDetails(Document):
-	pass
diff --git a/erpnext/setup/install.py b/erpnext/setup/install.py
index ad4d900..55be9ee 100644
--- a/erpnext/setup/install.py
+++ b/erpnext/setup/install.py
@@ -59,15 +59,18 @@
 				pass
 			except frappe.ValidationError:
 				pass
-	ces = frappe.get_single('Currency Exchange Settings')
-	ces.api_endpoint = "https://api.exchangerate.host/convert"
-	ces.append('result_key', {'key': 'result'})
-	ces.append('req_params', {'key': 'date', 'value': 'transaction_date'})
-	ces.append('req_params', {'key': 'from', 'value': 'from_currency'})
-	ces.append('req_params', {'key': 'to', 'value': 'to_currency'})
-	ces.save()
-	frappe.db.set_default("date_format", "dd-mm-yyyy")
 
+	frappe.db.set_default("date_format", "dd-mm-yyyy")
+	ces = frappe.get_single('Currency Exchange Settings')
+	try:
+		ces.api_endpoint = "https://api.exchangerate.host/convert"
+		ces.append('result_key', {'key': 'result'})
+		ces.append('req_params', {'key': 'date', 'value': '{transaction_date}'})
+		ces.append('req_params', {'key': 'from', 'value': '{from_currency}'})
+		ces.append('req_params', {'key': 'to', 'value': '{to_currency}'})
+		ces.save()
+	except frappe.ValidationError:
+		pass
 
 def create_compact_item_print_custom_field():
 	create_custom_field('Print Settings', {
diff --git a/erpnext/setup/utils.py b/erpnext/setup/utils.py
index 9146566..4fcd7d5 100644
--- a/erpnext/setup/utils.py
+++ b/erpnext/setup/utils.py
@@ -108,9 +108,7 @@
 			}
 			params = {}
 			for row in settings.req_params:
-				params[row.key] = req_params[row.value]
-			for eparam in settings.extra_params:
-				params[eparam.key] = format_ces_api(eparam.value, req_params)
+				params[row.key] = format_ces_api(row.value, req_params)
 			response = requests.get(format_ces_api(settings.api_endpoint, req_params), params=params)
 			# expire in 6 hours
 			response.raise_for_status()