Mapping between 'id' and 'series_id'

[ndominguez4219]

Is there a mapping between 'id' (an integer) and 'series_id' (a string) ? Some functions require one or the other. Thank you.

[avelkoski]

Not exactly. FRED offers various identification numbers, and each number has a particular purpose. In some cases, a relationship exists among identification numbers. For instance, series are associated to categories, so the string identification number assigned to a series may be mapped to the integer identification number of its parent category. However, you definitely cannot use the integer identification number for a category in a function that's built to query a series. That's just how the API works.