I'm porting some tasks from the Eikon C# .NET APIs to the LSEG Data Library API (implementing in Python). For some of this data we subscribe to the US imbalance feed RICs (e.g. IBM.NOI, AAPL.ITC). I'm subscribing to, among other fields, IMB_TYPE, IMB_ACT_TP, and IMB_SIDE). These fields, in the Eikon Quote app and the Workspace Quote app, show up as strings (for example, IMB_TYPE is usually O, R, or C, for open, regulatory, or close; IMB_SIDE is usually B, S, or N, for a buy, sell, or neutral imbalance). They always showed up that way using the C# API as well. However, in the LSEG Workspace API, they are showing up as numbers, like IMB_SIDE=3 or IMB_ACT_TP=4. Is this expected? Is there a known mapping from the numeric values of these fields to their string values or vice versa? I'm not sure how to deal with these.