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When converting a geodatabase feature class to a coverage, the following message is produced when the tool completes the conversion:
"Execution Error An error was generated by ArcInfo while executing Layer Export. Would you like to see the output message? Yes No"Clicking Yes displays the following error, multiple times:
"SHAPE Error(25): Column value could not be converted into a number or date."This error is displayed at the end:
"ODE sub-process failed"
The geodatabase feature class contains null values in a numeric field. There is no equivalent for this in coverages. Hence, the error message occurs for each occurrence of a null value in the field.
Replace the null values from the geodatabase feature class with a numeric representation for null, before exporting the feature class to a coverage. It's suggested you use zero (0) as the null equivalent.
1. Add the feature class to ArcMap.
2. Open the feature class attribute table and determine which fields contains null values.
3. Click Select By Attributes under the ArcMap Selection menu.
4. Type this query:
[FIELD] is nullWhere FIELD is the field containing the null values.