When ATtILA encounters a potential problem or an unexpected occurrence during the execution of one of its tools, it will attempt to relay that information to the user via the tool's View Details box and the Geoprocessing > History window. Depending on the situation, ATtILA may provide potential solutions, possible consequences, or some other piece of information deigned useful to the user. In most cases, the message provided in the tool's View Details box and the Geoprocessing > History window will be sufficient to inform the user fully of the situation. In other cases, a more detailed explanation than what can be readily expressed is necessary and a referral to this document is provided.

Please report any additional undocumented errors to: https://ecomments.epa.gov/enviroatlas/ and include “ATtILA” in the subject line.

NOTE: The errors listed below have been encountered over the lifetime of ATtILA's development. While several of them may not still be an issue with the current iteration of ATtILA, they are included here as a precaution.

Errors encountered:

• Background Processing error

• Excluded Values in Class Definitions

• Failed to execute (AddField)

• Failed to execute (TabulateArea)

• Failed to execute (Intersect)

• Failed to save raster dataset

• {FIELD} already exists error

• {FIELD} does not exist within table error

• Invalid extent error

• Tool appears to run but does not finish

• Unable to Determine Conversion Factor

• Undefined Values in LCC XML Document

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