Tool errors and warnings: 901-925
Release 9.3 Last modified April 24, 2009

Note: This topic was updated for 9.3.1.

Error code:	000901: Sum of distances from each to every other feature is zero.
Description:	The sum of all weights is zero indicating that either all features were coincident or the weight field contains all zeros.
Solution:	Ensure that the input feature class, or the active selection on the input feature class, does not contain only coincident points. If this is not the problem, check the weight field to ensure it does not contain all zeros or all null values.

Error code:	000902: Cannot set derived output.
Description:	This tool produces derived output. Upon exit, the derived output was not set ; it was not been passed along to linked processes, if any. This is an unusual error that should only occur when a script tool is running in an external debugger.
Solution:	If this error occurs persistently when the script tool is running outside a debugger environment, contact ESRI Tech Support.

Error code:	000903: Cannot overwrite: <value>
Description:	A problem occurred trying to create the output feature class.
Solution:	Try using a new output feature class name, ensure the output feature class resolves to a full pathname after you enter it as a tool parameter, if the output feature class exists and you want to overwrite it then turn on the overwrite output option, make sure the disk is not full and that you have write access to the output feature class workspace.

Error code:	000904: Error creating temp file.
Description:	The python utility for creating temporary files is failing unexpectedly. Results cannot be passed to the graphic display.
Solution:	Try rebooting the machine; you may have hung python processes. Make sure you have write access to the system temp directory and that the disk is not full. Run another script tool to make sure that this is not a python installation issue. If you have trouble running all script tools, the python installation may be corrupt. Uninstall and then reinstall Python. ESRI tech support can help you re-install python if this seems to be the issue.

Error code:	000905: Error writing to temp file.
Description:	There was an unexpected problem writing to a temporary file.
Solution:	Make sure you have write access to the system temp directory and that the disk is not full. You can also try rebooting the machine; you may have hung python processes that are creating problems.

Error code:	000906: Zero variance: all of the values for your input field are likely the same.
Description:	This tool was designed to work with an analysis field that contains a variety of values. If the values for the analysis or weight field are all 1, for example, there is no variation in the values and the computed variance will be zero. When the variance is zero, results cannot be computed.
Solution:	Select an analysis or weight field with a variety of values. If you are working with incident data where the weights might all be 1, consider aggregating the incidents before running the analysis so that the weight is the number of incidents that fall within each aggregation unit. Consider using a tool that does not consider weights, but only considers feature locations, such as the Average Nearest Neighbor or Multi-Distance Spatial Cluster Analysis (K Function) tools.

Error code:	000907: Mean nearest neighbor distance is zero.
Description:	The input feature class has no features, has no selected features, or all of the features are coincident at a single location, so that both the expected and observed average nearest neighbor distances are zero.
Solution:	Specify an input feature class with at least 2 non-coincident features. Check to see if there is an active selection on the input feature class, and if so, make sure the selection includes at least 2 non-coincident features.

Error code:	000908: None of the features have neighbors.
Description:	This method evaluates each feature within the context of neighboring features. You have specified a distance threshold and/or a Conceptualization of Spatial Relationships such that none of the features have any neighbors.
Solution:	If you are specifying a distance threshold, make sure the units are the same as the projected input feature class. Consider selecting a different Conceptualization of Spatial Relationships that will ensure that every feature has at least one neighbor.

Error code:	000909: Null values for the self potential field encountered.
Description:	You have specified a field for the self-potential parameter that includes some Null values. Null values will be interpreted as Zero for analysis.
Solution:	Investigate the null values to make sure that interpreting them as zero is what you intended. If not, replace the null values or remove the features associated with the null values from the analysis. You can remove records either by physically removing them (edit the feature class and delete the features), or by creating an active selection set that excludes these features.

Error code:	000910: Too few features for <value> of <value> cases.
Description:	This tool requires a minimum number of features within each case in order to perform analysis. One or more cases do not contain this minimum number of features, so no output will be produced for those cases. Only the first 30 cases with too few features for analysis will be reported.
Solution:	If you want output for every case, you can add features to those cases with too few features.

Error code:	000911: Same start and end points for <value> of <value> line features.
Description:	This tool constructs vectors from the start and end points associated with input feature class line features. Some features have the same start and end points which would result in vectors that have no length and no direction. These features have been excluded from the analysis.
Solution:	If necessary, correct or modify the geometry of features with the same start and end points.

Error code:	000912: Line features with same start and end points (only includes first 30): <value> = <value>
Description:	Some line/polyline features have the same start and end points; up to the first 30 features with this problem are listed.
Solution:	Examine the records listed to ensure they have proper geometry. Consider using the Repair Geometry tool to correct problems.

Error code:	000913: This tool only makes sense for line or polyline features.
Description:	This tool was designed to work with line or polyline features only. The input feature class provided does not contain line or polyline features.
Solution:	Use this tool with line or polyline features only.

Error code:	000914: The "polygon contiguity" concept is only appropriate for polygon feature classes.
Description:	The polygon contiguity Conceptualization of Spatial Relationships defines feature neighbors as those polygons that share a boundary or corner. The input feature class does not contain polygon features and so this Conceptualization of Spatial Relationships is not valid.
Solution:	Select a different Conceptualization of Spatial Relationships or provide a different, polygon input feature class for analysis.

Error code:	000915: The General G statistic was designed to work with positive attribute values.
Description:	This mathematics associated with this tool can only evaluate spatial clustering of high/low positive values. It cannot be used to assess clustering for fields containing negative values.
Solution:	Use a different input field for this analysis. Select a field that only contains values greater than or equal to 0. Alternatively, adjust the values in the field (add a constant) so that all values are larger than zero.

Error code:	000916: The input feature class does not appear to contain projected data.
Description:	Spatial data analysis on unprojected features is not recommended. This is particularly important for study areas that cover a large study area. The length of a decimal degree changes with latitude.
Solution:	Use the Project tool to set a projection for the input feature class prior to running this tool.

Error code:	000917: Cannot retrieve feature class properties.
Description:	An unexpected error occurred trying to retrieve feature class properties such as the number of records, extent, or spatial reference.
Solution:	Make sure that the feature class is not locked by another application or by a hung process. Examine the input feature class to make sure that it is not corrupt. For some types of features and some types of problems, the Repair Geometry tool may fix corrupted feature geometries.

Error code:	000918: Cannot retrieve feature class extent.
Description:	An unexpected problem occurred trying to retrieve the feature class extent.
Solution:	Inspect the input feature class; ensure that it has some features (or some selected features) and that these features are not all coincident. Make sure the input feature class is not locked by another application or by a hung process.

Error code:	000919: Errors processing user specified weights matrix.
Description:	An unexpected problem occurred while reading your spatial weights matrix file. The problem may be associated with format or with missing header information.
Solution:	Inspect the format of the spatial weights matrix you provided. Alternatively, and if appropriate, create a new spatial weights matrix file using the Generate Spatial Weights Matrix tool.

Error code:	000920: Specified case field, <value>, not found in <value>.
Description:	The case field you provided does not exist in the specified input feature class.
Solution:	Inspect the input feature class and check the field names. Provide a case field name that corresponds to one of the fields in your input feature class.

Error code:	000921: Specified weight field, <value>, not found in <value>.
Description:	The weight field you provided does not exist or is not visible in the specified input feature class.
Solution:	Inspect the input feature class and check the field names. Provide a numeric weight field name that corresponds to one of the fields in your input feature class.

Error code:	000922: Specified dimension field, <value>, not found in <value>
Description:	The dimension field you provided does not exist or is not visible in the specified input feature class.
Solution:	Inspect the input feature class and check the field names. Provide a numeric dimension field name that corresponds to one of the fields in your input feature class.

Error code:	000923: Specified analysis field, <value>, not found in <value>.
Description:	You have specified an analysis field name that does not exist or that is not visible in the input feature class.
Solution:	Inspect the input feature class and check the field names. Provide a numeric analysis field name that corresponds to one of the fields in your input feature class.

Error code:	000924: Specified self potential field, <value>, not found in <value>.
Description:	You have specified an self potential field name that does not exist or that is not visible in the input feature class.
Solution:	Inspect the input feature class and check the field names. Provide a self potential field name that corresponds to one of the fields in your input feature class.

Error code:	000925: Weights file information is ignored for the inverse, fixed distance, and indifference methods.
Description:	You have specified a spatial weights matrix file to use for defining spatial relationships among data features. It will not be used, however, because you did not specify "Get Spatial Weights From File" for the Conceptualization of Spatial Relationships parameter.
Solution:	To use a spatial weights matrix file to define spatial relationships, select "Get Spatial Weights From File" for the Conceptualization of Spatial Relationships parameter and also provide the pathname to that file. To use another Conceptualization of Spatial Relationships (inverse distance, fixed distance, etc.), do not include a spatial weights matrix file for the "Weights Matrix File" parameter.

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