Transacting business in the supply chain generally means communicating orders via EDI formatted files or some other equally rigid set of rules. The reasons are easy to understand; order times are critical and specifications for orders are complex so their formats need to adhere to formats that can be instantly read by computerized systems.

It’s been a while since Walmart first insisted that its suppliers moved to its digital order process. Back then the prospect of using EDI rather than fax or phone to place orders seemed like a technological hurdle. And in fact it was a significant hurdle that plenty of suppliers bucked against. But today Walmart’s tactics have become accepted and electronic order processing is no longer the pariah it once was. Now the retailer is making another mandate to its suppliers. But this time it’s not about what but where.