At present, there is no obligation to display the IOSS number on parcel labels. However, during the Brexit transition, we learnt that the following changes could avoid unnecessary delays and you may find it valuable to address these points: 1. Remove the sender address from CN22 label. 2. Remove the UK return address from your labels. 3. Clearly stipulate the content description as well as the product value, shipping & transport costs (including currency indicators too). These values should align with the commercial invoice and will assist in confirming the parcel’s intrinsic value.