'Attribute Filter' specifies the range of data to be exported.If a BIRT filter for the object type already exists, it can also be used for Valuemation Analytics reporting (by selecting it in the 'Attribute Filter' drop-down).
If no suitable filter exists, it needs to be created. See 'Attribute Filter Creation' below.
Note: the word 'Birt' refers to a previously used option for Valuemation reporting. The current versions use generic 'report filter' applicable for both Birt reports (if still used) and VMA reporting.