Measuring the gain or loss attributable to tables and constants by source is optional. However, it may be beneficial for plans that have tables or constants that are updated each year (such as updates to OPEB claims).

Any table or constant benefit formula component that has its value specified in valuation assumptions and is referenced in one or more beginning of period runs and one or more end of period runs is available as a source. Select the component(s) you wish to analyze.

Selecting all table and constant Sources to analyze will produce one source for gains or losses caused by all tables and constants. You can change the grouping or the order of allocation of each of the sources by clicking the Sources button and changing the Source Number in the next dialog box. Note that a different order for identical groups will produce a different allocation among the groups of gains and losses by source. Each separate group requires an additional pass. For the fastest run, group them all together. On the other hand, for the greatest detail, assign each item to its own group.