Provides code, or other identifier for the collateral portfolio to which this belongs. The collateral portfolio describes how trades are aggregated for collateral calculation purposes. All trades that are aggregated together for collateral calculation purposes will share the same collateral portfolio code. This code may come from different sources depending on the level of aggregation defined in the CSA (e.g. it may be the LEI of a counterparty or a desk identifier).

SFTR description of this field: Portfolio code - If the transaction is cleared and is included in a portfolio of transactions for which margins are exchanged, this portfolio should be identified by a unique code determined by the reporting counterparty. 52 alphanumeric character code including four special characters: .- _. Special characters are not allowed at the beginning and at the end of the code. No space allowed.