A320
Situational Awareness
Deviation / Discrepancy - Procedural Hazardous Material Violation; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Weight And Balance
General Maintenance Action
Procedure; Human Factors
The Ramp Lead loading flight XXXX called after the flight pushed to say he could not lock out the flight because the [load report] was telling him he had Dangerous Goods onboard; but he claimed he had no Dangerous Goods. Looking at the [load report] I asked him was item 1 onboard; he stated yes. I then told him item 1 was Dangerous Goods. Item 1 was UN3373 biologicals. After advising the Ramp Lead the aircraft would need to return to the blocks; the Lead calls back to advise he actually loaded item 3 in Pit 3; which on this particular A320 meant he loaded Dangerous Goods in the nesting system. I asked the Ramp Lead if the shipment had the white sticker with the black lettering and code UN3373 on the outside; he said yes. I then informed him again item 1 was Dangerous Goods.
Air carrier Load Planner reported advising Ramp Lead that aircraft must return to gate to correctly comply with required Hazmat loading configuration for air transport.