[NEP-18619]: Removing existing dataset validation

Author: soundarya-mv

lib/superset/services/duplicate_dashboard.rb

@@ -203,8 +203,8 @@ def validate_params
         raise ValidationError, "The source dashboard datasets are required to point to one schema only. Actual schema list is #{source_dashboard_schemas.join(',')}" if source_dashboard_has_more_than_one_schema?
         raise ValidationError, "One or more source dashboard filters point to a different schema than the dashboard charts. Identified Unpermittied Filter Dataset Ids are #{unpermitted_filter_dataset_ids.to_s}" if unpermitted_filter_dataset_ids.any?
 
-        # new dataset validations
-        raise ValidationError, "DATASET NAME CONFLICT: The Target Schema #{target_schema} already has existing datasets named: #{target_schema_matching_dataset_names.join(',')}" unless target_schema_matching_dataset_names.empty?
+        # new dataset validations -  Need to remove this as we are using the existing datasets for the new dashboard
+        # raise ValidationError, "DATASET NAME CONFLICT: The Target Schema #{target_schema} already has existing datasets named: #{target_schema_matching_dataset_names.join(',')}" unless target_schema_matching_dataset_names.empty?
         validate_source_dashboard_datasets_sql_does_not_hard_code_schema
 
         # embedded allowed_domain validations