chore: improve error message for missing fields.
diff --git a/erpnext/payroll/doctype/salary_slip/salary_slip.py b/erpnext/payroll/doctype/salary_slip/salary_slip.py
index 60aff02..deaa209 100644
--- a/erpnext/payroll/doctype/salary_slip/salary_slip.py
+++ b/erpnext/payroll/doctype/salary_slip/salary_slip.py
@@ -504,7 +504,8 @@
 			return amount
 
 		except NameError as err:
-			frappe.throw(_("Name error: {0}").format(err))
+			frappe.throw(_("{0} <br> This error can be due to missing or deleted field.").format(err),
+			    title=_("Name error"))
 		except SyntaxError as err:
 			frappe.throw(_("Syntax error in formula or condition: {0}").format(err))
 		except Exception as e:
@@ -928,7 +929,8 @@
 			if condition:
 				return frappe.safe_eval(condition, self.whitelisted_globals, data)
 		except NameError as err:
-			frappe.throw(_("Name error: {0}").format(err))
+			frappe.throw(_("{0} <br> This error can be due to missing or deleted field.").format(err),
+			    title=_("Name error"))
 		except SyntaxError as err:
 			frappe.throw(_("Syntax error in condition: {0}").format(err))
 		except Exception as e:
@@ -1223,4 +1225,4 @@
 
 def generate_password_for_pdf(policy_template, employee):
 	employee = frappe.get_doc("Employee", employee)
-	return policy_template.format(**employee.as_dict())
\ No newline at end of file
+	return policy_template.format(**employee.as_dict())