I am currently running a large model and when I get to the part where there is a field calculation needed, it gives me this error. If I choose to continue running the model, it continues fine. It just seems to be at this part that the field calculation gets hung up. The problem occurs with the first row of data, which is no different from any of the other rows of data. Has anyone else ever had this issue?

Hi Zach,

Can you provide more information. For example, what is the expression you are using for the field calculation? Could you also provide the value(s) of the field(s) you are using in the expression?