Wal-Mart, which has a venture with India's Bharti Enterprises for cash-and-carry wholesale operations, had earlier said it aimed to open the first of its centres by year-end and open 10-15 centres over seven years.
"Certainly that was the initial plan," Raj Jain said at the sidelines of a business conference.
"We still stick with that. It could be faster, it could be slower."
The first centre will be in northern India, he said.