{"example_only":true,"service":"walmart_shipping_coverage_drift","note":"Illustrative output from synthetic product facts; paid results depend on supplied facts.","name":"Walmart Two-Day / Three-Day Coverage Drift Monitor","marketplace":"walmart_us","input_summary":{"report_label":"Northwind shipping program drift (seller-supplied)","baseline_label":"Week 31 shipping program","baseline_date":"2026-07-27","current_label":"Week 32 shipping program","current_date":"2026-08-03","baseline_row_count":4,"current_row_count":4,"basis":"synthetic per-SKU publish/lifecycle status, two-day and three-day participation, template, coverage area, and optional sales/contribution"},"output":{"changed_sku_count":4,"unchanged_sku_count":1,"added_count":1,"removed_count":1,"coverage_lost_count":3,"coverage_gained_count":1,"mixed_count":0,"configuration_changed_count":0,"two_day_changed_count":1,"publish_status_changed_count":1,"total_fast_shipping_losses":2,"total_fast_shipping_gains":2,"loss_row_count":3,"loss_recent_unit_sales_total":530,"loss_contribution_value_total":940.0,"change_queue_preview":[{"priority_rank":1,"sku":"NW-TUMBLER-20","presence":"in_both","coverage_direction":"coverage_lost","change_types":["two_day_changed"],"before_two_day":"enabled","after_two_day":"disabled","fast_shipping_losses":1,"recent_unit_sales":320,"contribution_value":640.0},{"priority_rank":2,"sku":"NW-TOTE-01","presence":"in_both","coverage_direction":"coverage_lost","change_types":["publish_status_changed"],"before_publish_status":"published","after_publish_status":"unpublished","availability_loss":true,"recent_unit_sales":150,"contribution_value":300.0},{"priority_rank":3,"sku":"NW-CANDLE-08","presence":"removed","coverage_direction":"coverage_lost","change_types":["removed"],"fast_shipping_losses":1,"recent_unit_sales":60},{"priority_rank":4,"sku":"NW-BOTTLE-24","presence":"added","coverage_direction":"coverage_gained","change_types":["added"],"fast_shipping_gains":2,"recent_unit_sales":40}],"publish_status":"draft_needs_review","safety":"Deterministic snapshot diff on seller-supplied shipping-program fields only. No program ineligibility, Walmart defect, policy breach, or account outcome is claimed, and no template, enrollment, inventory, or listing is changed."}}