It is important to make sure that during preloading of multiple files the subordinate records are correctly identified.

The numbering depends on the kind of trigger used for determining the size of the roster:

1. fixed: the Id variable in the subordinate file should contain the code of the item specified in the Designer.
2. multiple choice: the subordinate file should contain the codes of items as specified during setting up the multiple choice question in the Designer.
3. numeric: the subordinate file should contain the items with sequential ids starting from zero (0);
4. text list: the subordinate file should contain the items with sequential ids starting from one (1). Note that the text list question itself requires indexing of members starting with zero (0).