The benefits of DEX depend directly upon how well DEX is integrated into the retailers back end ERP package. Integration can be one way, the vendors transactions getting imported into the ERP system, or two way, transactions being imported in with the results that could include adjustments to the transaction going back to the vendor.
If the integration simply consists of taking the vendors transactions and importing them in, without a corresponding response back to the vendor, the main benefit would be the cost savings of the elimination of manual data input and the associated data input errors. The import process could also include updating the on hand inventory in real time and automated notifications of potential issues such as incorrect pricing and unknown items being received, which would help avoid items not on file getting to the front end check out. This could all be accomplished without any labor costs.
If the integration is two ways, in addition to the above, the vendor would be notified of issues related to the transactions and unknown or unauthorized items cold be deleted from the transaction as well as a notification of the retailers price on file.
The final level of integration would include a receiving clerk verifying quantities delivered in which the receiving clerk would either visually verify the product being brought in or alternatively could scan the barcodes of all items being received which could give an additional check that items are on file and will scan at check out.