The Future Group will challenge a Delhi court order that has blocked its $3.4 billion retail assets sale on objections of business partner Amazon.com Inc, a source told Reuters on Wednesday.

The court blocked Future Group’s sale of a swathe of assets to rival Reliance Industries on Tuesday after Amazon raised objections to the deal, in a battle of the retail titans that could reshape the shopping sector.

The appeal against that order is set to be filed later on Wednesday in the court, the source said, declining to be identified.