Add a transaction to a portfolio.
Add a transaction to a portfolio. Certain error conditions yield errors as follows: |Error Condition|HTTP Error| |-------|--------| |The number of transactions would exceed 1000.|400 Bad Request|
Add a transaction to a portfolio. Certain error conditions yield errors as follows: |Error Condition|HTTP Error| |-------|--------| |The number of transactions would exceed 1000.|400 Bad Request|