ERC20 tokens with multiple entry points (known as double entry tokens or two address tokens) such as Synthetixs ProxyERC20 contract will not work properly on the ledger. In the ledger, all tokens are given a specific uint256 value, by calling _getSpecifiedToken(), which will call _calculateOceanId().
If a user uses a two-address token, the two address will be considered different, and the Ocean will create 2 separate ledgers instead of 1.
OceanAdapter.sol#L107
