labeling service is a fulfillment or warehousing offering where providers apply barcodes, FNSKU labels, or custom branding to products or packaging. This is essential for platforms like Amazon FBA, where improper labeling can lead to rejections or delays. Labeling services ensure compliance with inventory tracking systems and streamline sorting and picking processes. Many 3PLs offer automated and manual labeling options. Accurate labeling enhances inventory visibility, reduces errors, and improves the overall efficiency of the supply chain. Outsourcing labeling saves time and helps brands maintain consistency.