What term describes problems in code that arise during the application of the software?

The term that accurately describes problems in code that arise during the application of the software is 'Error diagnostics.' This refers to the process of identifying and analyzing errors that occur when the software is running. When issues emerge during runtime, error diagnostics help developers track down the specific points of failure or unexpected behavior in the code.

In contrast, debugging is a broader term that encompasses the entire process of identifying, isolating, and correcting bugs and errors in software, not just during the application phase but also during development. Erroneous data is related to incorrect or improperly formatted data that may lead to errors, but it does not specifically refer to problems in the code itself arising from software application. Testing involves evaluating software to ensure it behaves as expected, including checking for errors, but it does not directly describe the problems occurring during the actual application of the software.