FBA sellers, nine out of ten have been rejected at inbound. Usually not bad goods, but non-compliant labels or packaging. The forwarding warehouse's labeling/relabeling/consolidation is built for this step.
Labeling: follow platform spec
FNSKU labels must be clear, firm, not covered. Doing it yourself easily skews, misses, duplicates; centralizing in the warehouse to spec is steadier.
Relabeling: return re-inbound
Buyer-returned goods, after relabeling, can re-enter FBA. This recovers a lot of cost, but labels must be clearly old vs new to avoid mixed inventory.
Consolidation: fewer pieces, lower cost
Merge multiple small boxes into one, reducing inbound piece count and last-mile cost. Note the merged single box weight and size stay within platform limits.
Confirm before operating
Give the warehouse platform labeling and packaging requirements in advance, avoid operating to old spec and getting rejected.
The forwarding warehouse's value is making "before inbound" certain.
Hand these actions to a spec-compliant warehouse; you save space, labor, and rework time after rejection.