What action should be taken first when an error is detected on the MF1M-10C?

The appropriate first action when detecting an error on the MF1M-10C is to draw a single line through the erroneous element. This action serves several important purposes in maintaining the integrity of the report.

By marking through the error, it indicates that the original entry is no longer valid, while still allowing the original data to be visible for reference. This practice helps to ensure that any subsequent actions taken—whether it's correcting the error or providing context regarding the data—remain clear and traceable. It establishes a clear visual cue that an issue has been recognized and prevents the possibility of further use of the incorrect data.

Once the erroneous element has been marked, the next steps can include correcting the information, notifying relevant personnel, or deciding on further actions based on standard operating procedures. Therefore, marking through the erroneous element is the first critical step in a process that allows for proper documentation and procedural adherence.