This is an error from the superfund, meaning that the rollover was successfully processed and received by the superfund, but the superfund has rejected it. The reason provided 'entity rules prevent rollover' is the reason the superfund has provided for the rejection which admittedly, doesn't specifically state why it has been rejected. If you need further confirmation on why the rollover was rejected, please reach out to the superfund directly to confirm.
The conversation ID is a unique reference in Superstream that both wrkr and the superfund are able to search, to locate a specific rollover. No other rollover will have the same conversation ID reference. To find the conversation ID, please click on the Rollovers menu. The conversation ID will be displayed in the first column of the Rollover table however it may be difficult to copy. If you have difficulty copying the conversation ID, please click into the specific rollover and the Conversation ID will be displayed as shown in the below example: