"There is at least one data placeholder that cannot be found..."

Trying to determine what InDesign is objecting to here has lost me HOURS of work. As we speak, I'm trying to set up a tab file for a document. I have inserted two data placeholders. They correspond to the two fields in the data source. I cannot locate the "offending" placeholder.

Can you PLEASE add a "locate all placeholders" or something similar so we don't pull our hair out trying to find the "extra" placeholders?