Error messages

Updated on 26 Jul 2022
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The following error messages may be encountered when using the 1D urban solver.

Error Code	Error Message	Information
101	Memory allocation error	There is not enough physical memory in the computer to analyse the study area.
103	Cannot solve KW equations for Link xxx	The internal solver for Kinematic Wave routing failed to converge for the specified link at some stage of the simulation.
105	Cannot open ODE solver	The system could not open its Ordinary Differential Equation solver.
107	Cannot compute a valid time step	A valid time step for runoff or flow routing calculations (i.e., a number greater than 0) could not be computed at some stage of the simulation.
108	Ambiguous outlet ID name for Subcatchment xxx	The name of the element identified as the outlet of a subcatchment belongs to both a node and a subcatchment in the project's data base.
109	Invalid parameter values for Aquifer xxx	The properties entered for an aquifer object were either invalid numbers or were inconsistent with one another (e.g., the soil field capacity was higher than the porosity).
110	Ground elevation is below water table for Subcatchment xxx	The ground elevation assigned to a subcatchment’s groundwater parameters cannot be below the initial water table elevation of the aquifer object used by the subcatchment.
111	Invalid length for Conduit xxx	Conduits cannot have zero or negative lengths.
113	Invalid roughness for Conduit xxx	Conduits cannot have zero or negative roughness values.
114	Invalid number of barrels for Conduit xxx	Conduits must consist of one or more barrels.
115	Adverse slope for Conduit xxx	Under Steady or Kinematic Wave routing, all conduits must have positive slopes. This can usually be corrected by reversing the inlet and outlet nodes of the conduit (i.e., right click on the conduit and select 'Reverse' from the pop-up menu that appears). Adverse slopes are permitted under Dynamic Wave routing.
117	No cross section defined for Link xxx	Cross section geometry was never defined for the specified link.
119	Invalid cross section for Link xxx	Either an invalid shape or invalid set of dimensions was specified for a link's cross section.
121	Missing or invalid pump curve assigned to Pump xxx	Either no pump curve or an invalid type of curve was specified for a pump.
131	The following links form cyclic loops in the drainage system	The Steady and Kinematic Wave flow routing methods cannot be applied to systems where a cyclic loop exists (i.e., a directed path along a set of links that begins and ends at the same node). Most often the cyclic nature of the loop can be eliminated by reversing the direction of one of its links (i.e., switching the inlet and outlet nodes of the link). The names of the links that form the loop will be listed following this message.
133	Node xxx has more than one outlet link	Under Steady and Kinematic Wave flow routing, a junction node can have only a single outlet link.
134	Node xxx has illegal DUMMY link connections	Only a single conduit with a DUMMY cross-section or Ideal-type pump can be directed out of a node; a node with an outgoing Dummy conduit or Ideal pump cannot have all of its incoming links be Dummy conduits and Ideal pumps; a Dummy conduit cannot have its upstream end connected to a storage node.
135	Divider xxx does not have two outlet links	Flow divider nodes must have two outlet links connected to them.
136	Divider xxx has invalid diversion link	The link specified as being the one carrying the diverted flow from a flow divider node was defined with a different inlet node.
137	Weir Divider xxx has invalid parameters	The parameters of a Weir-type divider node either are non-positive numbers or are inconsistent (i.e., the value of the discharge coefficient times the weir height raised to the 3/2 power must be greater than the minimum flow parameter).
138	Node xxx has initial depth greater than maximum depth	Self-explanatory
139	Regulator xxx is the outlet of a non-storage node	Under Steady or Kinematic Wave flow routing, orifices, weirs, and outlet links can only be used as outflow links from storage nodes.
141	Outfall xxx has more than 1 inlet link or an outlet link	An outfall node is only permitted to have one link attached to it.
143	Regulator xxx has invalid cross-section shape	An orifice must have either a CIRCULAR or RECT_CLOSED shape, while a weir must have either a RECT_OPEN, TRAPEZOIDAL, or TRIANGULAR shape.
145	Drainage system has no acceptable outlet nodes	Under Dynamic Wave flow routing, there must be at least one node designated as an outfall.
151	Unit Hydrograph in set xxx has invalid time base	The time base of a Unit Hydrograph cannot be negative and if positive, must not be less than the recording interval for its rain gage.
153	Unit Hydrograph in set xxx has invalid response ratios	The response ratios for a set of Unit Hydrographs (the short-, medium-, and long- term response hydrographs) must be between 0 and 1.0 and cannot add up to a value greater than 1.0
155	Invalid sewer area for RDII at Node xxx	The sewer area contributing RDII inflow to a node cannot be a negative number.
156	Inconsistent data file name for Rain Gage xxx	If two Rain Gages use files for their data sources and have the same Station IDs then they must also use the same data files.
157	Inconsistent rainfall format for Rain Gage xxx	If two or more rain gages use the same Time Series for their rainfall data then they must all use the same data format (intensity, volume, or cumulative volume).
158	Time series for Rain Gage xxx is also used by another object	A rainfall Time Series associated with a Rain Gage cannot be used by another object that is not also a Rain Gage.
159	Recording interval greater than time series interval for Rain Gage xxx	The recording time interval specified for the rain gage is greater than the smallest time interval between values in the Time Series used by the gage.
161	Cyclic dependency in treatment functions at Node xxx	An example would be where the removal of pollutant 1 is defined as a function of the removal of pollutant 2 while the removal of pollutant 2 is defined as a function of the removal of pollutant 1.
171	Curve xxx has invalid or out of sequence data	The X-values of a curve object must be entered in increasing order.
173	Time Series xxx has its data out of sequence	The time (or date/time) values of a time series must be entered in sequential order.
181	Invalid Snow Melt Climatology parameters	The ATI Weight or Negative Melt Ratio parameters are not between 0 and 1 or the site latitude is not between -60 and +60 degrees.
182	Invalid parameters for Snow Pack xxx	A snow pack’s minimum melt coefficient is greater than its maximum coefficient; the fractions of free water capacity or impervious ploughable area are not between 0 and 1; or the snow removal fractions sum to more than 1.0.
183	No type specified for LID xxx	A named LID control has layers defined for it but its LID type was never specified.
184	Missing layer for LID xxx	A required design layer is missing for the specified LID control.
185	Invalid parameter value for LID xxx	An invalid value was supplied for an LID control's design parameter.
187	LID area exceeds total area for Subcatchment xxx	The area of the LID controls placed within the subcatchment is greater than that of the subcatchment itself.
188	LID capture area exceeds total impervious area for Subcatchment xxx	The amount of impervious area assigned to be treated by LID controls in the subcatchment exceeds the total amount of impervious area available.
191	Simulation start date comes after ending date	Self-explanatory
193	Report start date comes after ending date	Self-explanatory
195	Reporting time step is less than routing time step	Self-explanatory
200	One or more errors in input file	This message appears when one or more input file parsing errors (the 200-series errors) occur.
201	Too many characters in input line	A line in the input file cannot exceed 1024 characters.
203	Too few items at line n of input file	Not enough data items were supplied on a line of the input file.
205	Invalid keyword at line n of input file	An unrecognised keyword was encountered when parsing a line of the input file.
207	Duplicate ID name at line n of input file	An ID name used for an object was already assigned to an object of the same category.
209	Undefined object xxx at line n of input file	A reference was made to an object that was never defined. An example would be if node 123 were designated as the outlet point of a subcatchment, yet no such node was ever defined in the study area.
211	Invalid number xxx at line n of input file	Either a string value was encountered where a numerical value was expected or an invalid number (e.g., a negative value) was supplied.
213	Invalid date/time xxx at line n of input file	An invalid format for a date or time was encountered. Dates must be entered as month/day/year and times as either decimal hours or as hour:minute:second.
217	Control rule clause out of sequence at line n of input file	Errors of this nature can occur when the format for writing control rules is not followed correctly (see Section C.3).
219	Data provided for unidentified transect at line n of input file	A GR line with Station-Elevation data was encountered in the [TRANSECTS] section of the input file after an NC line but before any X1 line that contains the transect’s ID name.
221	Transect station out of sequence at line n of input file	The station distances specified for the transect of an irregular cross section must be in increasing numerical order starting from the left bank.
223	Transect xxx has too few stations	A transect for an irregular cross section must have at least 2 stations defined for it.
225	Transect xxx has too many stations.	A transect cannot have more than 1500 stations defined for it.
227	Transect xxx has no Manning's N	No Manning’s N was specified for a transect (i.e., there was no NC line in the [TRANSECTS] section of the input file.
229	Transect xxx has invalid overbank locations	The distance values specified for either the left or right overbank locations of a transect do not match any of the distances listed for the transect's stations.
231	Transect xxx has no depth	All of the stations for a transect were assigned the same elevation.
233	Invalid treatment function expression at line n of input file	A treatment function supplied for a pollutant at a specific node is either not a correctly formed mathematical expression or refers to unknown pollutants, process variables, or math functions.
301	Files share same names	The input, report, and binary output files specified on the command line cannot have the same names.
303	Cannot open input file	The input file either does not exist or cannot be opened (e.g., it might be in use by another program).
305	Cannot open report file	The report file cannot be opened (e.g., it might reside in a directory to which the user does not have write privileges).
307	Cannot open binary results file	The binary output file cannot be opened (e.g., it might reside in a directory to which the user does not have write privileges).
309	Error writing to binary results file	There was an error in trying to write results to the binary output file (e.g., the disk might be full or the file size exceeds the limit imposed by the operating system).
311	Error reading from binary results file	The command line version of the urban solver could not read results saved to the binary output file when writing results to the report file.
313	Cannot open scratch rainfall interface file	The urban solver could not open the temporary file it uses to collate data together from external rainfall files.
315	Cannot open rainfall interface file xxx	The urban solver could not open the specified rainfall interface file, possibly because it does not exist or because the user does not have write privileges to its directory.
317	Cannot open rainfall data file xxx	An external rainfall data file could not be opened, most likely because it does not exist.
318	Date out of sequence in rainfall data file xxx	An external user-prepared rainfall data file must have its entries appear in chronological order. The first out-of-order entry will be listed.
319	Unknown format for rainfall data file	The urban solver could not recognise the format used for a designated rainfall data file.
320	Invalid format for rainfall interface file	The urban solver was trying to read data from a designated rainfall interface file with the wrong format (i.e., it may have been created for some other project or actually be some other type of file).
321	No data in rainfall interface file for gage xxx	This message occurs when a project wants to use a previously saved rainfall interface file, but cannot find any data for one of its rain gages in the interface file. It can also occur if the gage uses data from a user-prepared rainfall file and the station id entered for the gage cannot be found in the file.
323	Cannot open runoff interface file xxx	A runoff interface file could not be opened, possibly because it does not exist or because the user does not have write privileges to its directory.
325	Incompatible data found in runoff interface file	The urban solver was trying to read data from a designated runoff interface file with the wrong format (i.e., it may have been created for some other project or actually be some other type of file).
327	Attempting to read beyond end of runoff interface file	This error can occur when a previously saved runoff interface file is being used in a simulation with a longer duration than the one that created the interface file.
329	Error in reading from runoff interface file	A format error was encountered while trying to read data from a previously saved runoff interface file.
331	Cannot open hot start interface file xxx	A hot start interface file could not be opened, possibly because it does not exist or because the user does not have write privileges to its directory.
333	Incompatible data found in hot start interface file.	The urban solver was trying to read data from a designated hot start interface file with the wrong format (i.e., it may have been created for some other project or actually be some other type of file).
335	Error in reading from hot start interface file	A format error was encountered while trying to read data from a previously saved hot start interface file.
336	No climate file specified for evaporation and/or wind speed	This error occurs when the user specifies that evaporation or wind speed data will be read from an external climate file, but no name is supplied for the file.
337	Cannot open climate file xxx	An external climate data file could not be opened, most likely because it does not exist.
338	Error in reading from climate file xxx	The urban solver was trying to read data from an external climate file with the wrong format.
339	Attempt to read beyond end of climate file xxx	The specified external climate does not include data for the period of time being simulated.
341	Cannot open scratch RDII interface file	The urban solver could not open the temporary file it uses to store RDII flow data.
343	Cannot open RDII interface file xxx	An RDII interface file could not be opened, possibly because it does not exist or because the user does not have write privileges to its directory.
345	Invalid format for RDII interface file	The urban solver was trying to read data from a designated RDII interface file with the wrong format (i.e., it may have been created for some other project or actually be some other type of file).
351	Cannot open routing interface file xxx	A routing interface file could not be opened, possibly because it does not exist or because the user does not have write privileges to its directory.
353	Invalid format for routing interface file xxx	The urban solver was trying to read data from a designated routing interface file with the wrong format (i.e., it may have been created for some other project or actually be some other type of file).
355	Mismatched names in routing interface file xxx	The names of pollutants found in a designated routing interface file do not match the names used in the current project.
357	Inflows and outflows interface files have same name	In cases where a run uses one routing interface file to provide inflows for a set of locations and another to save outflow results, the two files cannot both have the same name.
361	Could not open external file used for Time Series xxx	The external file used to provide data for the named time series could not be opened, most likely because it does not exist.
363	Invalid data in external file used for used for Time Series xxx	The external file used to provide data for the named time series has one or more lines with the wrong format.

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