WFS has expanded rapidly — more fulfillment centers, higher transaction volumes, and a more complex returns flow through Walmart's 4,600+ store network. That scale creates more opportunities for discrepancies to occur and more places for them to go undetected. Most brands don't have a systematic process for finding them because identifying reimbursement opportunities requires detailed analysis of transaction data that doesn't surface in standard reporting.
Returns are a particularly significant source of unrecovered funds on Walmart. Items returned through Walmart's store network don't always end up back in your WFS inventory — and when they don't, that loss should be a reimbursement claim. Without active reconciliation, those funds rarely get recovered.
Fee errors compound quietly. A product classified at the wrong dimensions pays the wrong WFS fee on every single transaction until someone catches it. Across a high-volume SKU, the cumulative impact is significant — and it's recoverable if the claim is filed correctly.