Merge pull request #20607 from khushalti/develop

fix: validation on max group strength student group form

erpnext/education/doctype/student_group/student_group.py

@@ -26,6 +26,8 @@ class StudentGroup(Document):
 			frappe.throw(_("Please select Program"))
 
 	def validate_strength(self):
+		if self.max_strength <= 0:
+			frappe.throw(_("""Max strength must be greater than zero."""))
 		if self.max_strength and len(self.students) > self.max_strength:
 			frappe.throw(_("""Cannot enroll more than {0} students for this student group.""").format(self.max_strength))