Dejavoo: Add or Remove a File Parameter via the DvMMS
Public|Aug 19, 2025
Note: You must have access to the MMSx for the reseller of whom you are attempting to update the file in order to complete this process
If a parameter is not available in the Add Parameter option you will need to contact the partner to have the parameter option added to the file template
Log into the Appropriate MMSx account for the reseller
Note: Access to MMSx is very limited. Check with a TR if you do not have a login for the partner with whom you are working
Locate the terminal by searching either the TPN or SN of the device
Select Add Parameter
Locate the Parameter you wish to add and check its Checkbox
Note: The parameter will be located underneath the same option as you would find the parameter inside the file
Click Close
When removing a parameter from the file, you are really just hiding it. The parameter is always there, it is just not visible. You will not be able to remove all parameters
Log into the Appropriate MMSx account for the reseller
Note: Access to MMSx is very limited. Check with a TR if you do not have a login for the partner with whom you are working
Locate the terminal by searching either the TPN or SN of the device
Select Add Parameter
Locate the Parameter you wish to remove and un-check its Checkbox
Note: The parameter will be located underneath the same option as you would find the parameter inside the file.
If you do not see the option or its checkbox, it can not be removed.
Failure to close the batch can result in lost transactions
The File must be unlocked before it can be downloaded
When creating a File build request:
Provide merchant with case #
Provide merchant call-back information
Let the merchant know that file builds can take 24-48 hours
Have the merchant call you back at their Convenience to download the file
Once unlocked, the file will remain unlocked for 24 hours
STAX Terminals: If a site has STAX and is using FDO processing with Datawire a Full-download will break the Datawire connection, and require re-registration. Please consult a TR before doing a full download.
DOWNLOAD FAILED: Verify network connectivity. If using a phone line or WiFi, try connecting to ethernet.
If the download fails when using a Dial connection confirm no other device/phone is using the line and retry atleast once
Make sure time and date are correct.
If the download fails when using a USB drive attempt to plug in the USB drive to a computer and verify the device can be read and there are files on the drive
USB requires a Micro USB A Male to USB A Female dongle in order to plug in the thumb drive into the terminal
Rebooting the Terminal with a USB thumb drive plugged in will prompt for download.
""Application Update Failed with Code 2"" - to clear this error follow the steps below: