Invest Account Into Model

Submit invest or divest instructions for one or more accounts into a single destination model, with a per-account cash amount. Each entry in accountList pairs an account identifier with the individual amtToInvest value applied to that account (positive to invest, negative to divest).

Constraints and comparison to /fa/model/tws-invest-divest:

• Only a single model may be targeted per request (the top-level model field). To invest into multiple models in one call, use /fa/model/tws-invest-divest and its modelList.
• The model must be denominated in a single currency; multi-currency models are not supported by this endpoint. Use /fa/model/tws-invest-divest for models holding instruments across multiple currencies.
• FA pre-trade allocation groups are not supported here — each account and its individual investment amount must be listed explicitly in accountList.
• Because each account is listed individually, this endpoint allows a different investment amount per account. /fa/model/tws-invest-divest, by contrast, splits a single amtToInvest equally across accounts when a group or accountList is used.