
Assuming crmfields is required, the following result was found.
= List:String(); l_MyMultiPicklist.add("Option1"); l_MyMultiPicklist.add("Options 2, 3"); // Push to Creator: m_CrmFields = Map(); m_CrmFields.put("My_MultiPicklist": l_MyMultiPicklist.toString(",")); // Yields ERROR: Failure, Invalid column value...

bc1qf6elrdxc968h0k673l2djc9wrpazhqtxw8qqp4
0xb038962F3809b425D661EF5D22294Cf45E02FebF