We are aware of that an error occurs when referencing the relationship between entities.
It seems that the error occurs when using LoopUp fields. I hope you to correct this behavior so that no error occurs.
Thank you for your consideration.
Closing out as we haven't received a repsonse, will open back for review if more details are provided.
Hi @O365_JP_Support - can you please provide some details on the error you're receiving?