SYMPTOM
When using the Bursting feature in Strategy Distribution Services 9.x as per KB3857 shown below:

The files names do not contain the attribute form name even though the correct file name syntax was used ({@}) as shown below:

CAUSE
The project contains another attribute with the same name as the attribute used in Bursting. When attempting to output the attribute form value to the respective file name, Strategy finds the attribute by attribute name and not the attribute's GUID.
ACTION
Remove or rename the duplicate attribute.
Article Reference Number:
KB8714