A  
ATimesFailure [Sundials_LinearSolver]  Indicates failure of an atimes function. 
AdjointNotInitialized [Idas.Adjoint]  Adjoint sensitivity analysis was not initialized. 
AdjointNotInitialized [Cvodes.Adjoint]  Adjoint sensitivity analysis was not initialized. 
B  
BadEwt [Ida]  A component of the error weight vector, either for the input value or a corrected value, is zero. 
BadFinalTime [Idas.Adjoint]  The final time was outside the interval over which the forward problem was solved. 
BadFinalTime [Cvodes.Adjoint]  The final time was outside the interval over which the forward problem was solved. 
BadK [Arkode]  Raised by 
BadK [Ida]  Raised by 
BadK [Cvode]  Raised by 
BadSensIdentifier [Idas.Sensitivity]  The index passed to identify a particular sensitivity is invalid. 
BadSensIdentifier [Cvodes.Sensitivity]  The index passed to identify a particular sensitivity is invalid. 
BadT [Arkode]  Raised by 
BadT [Ida]  Raised by 
BadT [Cvode]  Raised by 
C  
ConstraintFailure [Ida]  No solution satisfying the inequality constraints could be found. 
ConvFailure [Sundials_LinearSolver]  Indicates that a solver failed to converge. 
ConvergenceFailure [Arkode]  Too many convergence test failures within a step or at the minimum step size. 
ConvergenceFailure [Ida]  Too many convergence test failures within a step, or Newton convergence failed. 
ConvergenceFailure [Cvode]  Too many convergence test failures within a step or at the minimum step size. 
E  
ErrFailure [Arkode]  Too many error test failures within a step or at the minimum step size. 
ErrFailure [Ida]  Too many error test failures within a step. 
ErrFailure [Cvode]  Too many error test failures within a step or at the minimum step size. 
F  
FirstQuadRhsFuncFailure [Idas.Quadrature]  The quadrature function failed at the first call. 
FirstQuadRhsFuncFailure [Cvodes.Quadrature]  The quadrature function failed at the first call. 
FirstQuadSensRhsFuncFailure [Idas.Sensitivity.Quadrature]  The sensitivity quadrature function failed at the first call. 
FirstQuadSensRhsFuncFailure [Cvodes.Sensitivity.Quadrature]  The sensitivity quadrature function failed at the first call. 
FirstResFuncFailure [Ida]  The residual function had a recoverable error when first called. 
FirstRhsFuncFailure [Arkode]  The righthand side function had a recoverable error when first called. 
FirstRhsFuncFailure [Cvode]  The righthand side function had a recoverable error when first called. 
FirstSensRhsFuncFailure [Cvodes.Sensitivity]  The sensitivity function had a recoverable error when first called. 
FirstSystemFunctionFailure [Kinsol]  The 
ForwardFailure [Idas.Adjoint]  An error occured during the integration of the forward problem. 
ForwardFailure [Cvodes.Adjoint]  An error occured when integrating the forward problem from a checkpoint. 
ForwardReinitFailure [Idas.Adjoint]  Reinitialization of the forward problem failed at the first checkpoint (corresponding to the initial time of the forward problem). 
ForwardReinitFailure [Cvodes.Adjoint]  Reinitialization of the forward problem failed at the first checkpoint (corresponding to the initial time of the forward problem). 
G  
GSFailure [Sundials_LinearSolver]  Indicates failure of a GramSchmidt routine. 
I  
IdNotSet [Ida]  Variable ids are required but not set. 
IllInput [Arkode]  Raised on missing or illegal solver inputs. 
IllInput [Ida]  Raised on missing or illegal solver inputs. 
IllInput [Kinsol]  An input parameter was invalid. 
IllInput [Cvode]  Raised on missing or illegal solver inputs. 
IllegalPrecType [Sundials_LinearSolver]  Raised by 
IncompatibleArguments [Sundials_Matrix]  Raised if matrix operation arguments are mutually incompatible. 
IncompatibleNvector [Nvector]  Raised when an nvector argument is incompatible with a session. 
IncorrectGlobalSize [Nvector_parallel]  Raised by make if the given global length is not consistent with the sum of local lengths across all parallel instances. 
InsufficientStorageUpperBandwidth [Sundials_LinearSolver]  Raised when the storage upper bandwidth ( 
InternalFailure [Sundials_LinearSolver]  Indicates that an internal callback, identified by the first argument, returned the given unknown error code. 
InvalidLinearSolver [Sundials_LinearSolver]  Raised on invalid use of linear solver functions. 
Invalidated [Sundials_Matrix]  Raised in Config.sundials_version < 3.0.0 on an attempt to access a value that has become invalid. 
L  
LUfactFailure [Sundials_LinearSolver]  Indicates that LU factorization encountered a singular matrix. 
LineSearchBetaConditionFailure [Kinsol]  The line search algorithm could not satisfy the “betacondition” for

LineSearchNonConvergence [Kinsol]  Line search could not find an iterate sufficiently distinct from the current one, or an iterate satisfying the sufficient decrease condition. 
LinearInitFailure [Arkode]  Linear solver initialization failed. 
LinearInitFailure [Ida]  Linear solver initialization failed. 
LinearInitFailure [Cvode]  Linear solver initialization failed. 
LinearSetupFailure [Arkode]  Linear solver setup failed in an unrecoverable manner. 
LinearSetupFailure [Ida]  Linear solver setup failed in an unrecoverable manner. 
LinearSetupFailure [Kinsol]  The 
LinearSetupFailure [Cvode]  Linear solver setup failed in an unrecoverable manner. 
LinearSolveFailure [Arkode]  Linear solver solution failed in an unrecoverable manner. 
LinearSolveFailure [Ida]  Linear solver solution failed in an unrecoverable manner. 
LinearSolveFailure [Cvode]  Linear solver solution failed in an unrecoverable manner. 
LinearSolverFailure [Kinsol]  Either 
LinearSolverInUse [Sundials_LinearSolver]  Raised on an attempt to associate a linear solver instance with more than one session. 
LinearSolverInitFailure [Kinsol]  Linear solver initialization failed. 
LinearSolverNoRecovery [Kinsol]  The 
LinesearchFailure [Ida]  Linesearch could not find a solution with a step larger than steptol in weighted RMS norm. 
M  
MassInitFailure [Arkode]  Mass matrix solver initialization failed. 
MassMultFailure [Arkode]  Mass matrixvector multiplication failed. 
MassSetupFailure [Arkode]  Mass matrix solver setup failed in an unrecoverable manner. 
MassSolveFailure [Arkode]  Mass matrix solver solution failed in an unrecoverable manner. 
MatrixNotSquare [Sundials_LinearSolver]  Raised when creating a linear solver if the given matrix is not square. 
MatrixVectorMismatch [Sundials_LinearSolver]  Raised when creating a linear solver if the number of matrix rows and the vector length are not equal. 
MaxIterationsReached [Kinsol]  The maximum number of nonlinear iterations has been reached. 
MaxNewtonStepExceeded [Kinsol]  Five consecutive steps exceed the maximum newton step. 
MissingLinearSolver [Kinsol]  A linear solver is required but was not specified. 
N  
NoBackwardProblem [Idas.Adjoint]  No backward problem has been created. 
NoBackwardProblem [Cvodes.Adjoint]  No backward problem has been created. 
NoForwardCall [Idas.Adjoint]  Neither 
NoForwardCall [Cvodes.Adjoint]  Neither 
NoRecovery [Ida]  A recoverable error occurred in a callback but no recovery was possible. 
NonPositiveEwt [Sundials]  Raised by errorweight functions on nonpositive error weights. 
NotImplementedBySundialsVersion [Sundials_Config]  Raised for features that are not available in the installed version of the underlying sundials library. 
O  
OperationNotSupported [Nvector_custom]  Thrown for operations not provided to 
P  
PSetFailure [Sundials_LinearSolver]  Indicates failure of a preconditioner setup routine. 
PSolveFailure [Sundials_LinearSolver]  Indicates failure of a preconditioner solver. 
PackageFailure [Sundials_LinearSolver]  Indicates failure in an external linear solver package. 
PostprocStepFailure [Arkode]  The postprocess step function failed. 
Q  
QRSolFailure [Sundials_LinearSolver]  Indicates that the QR solution found a singular result. 
QRfactFailure [Sundials_LinearSolver]  Indicates that QR factorization encountered a singular matrix. 
QuadNotInitialized [Idas.Quadrature]  Quadrature integration was not initialized. 
QuadNotInitialized [Cvodes.Quadrature]  Quadrature integration was not initialized. 
QuadRhsFuncFailure [Idas.Quadrature]  The quadrature function failed in an unrecoverable manner. 
QuadRhsFuncFailure [Cvodes.Quadrature]  The quadrature function failed in an unrecoverable manner. 
QuadSensNotInitialized [Idas.Sensitivity.Quadrature]  Quadrature integration was not initialized. 
QuadSensNotInitialized [Cvodes.Sensitivity.Quadrature]  Quadrature integration was not initialized. 
QuadSensRhsFuncFailure [Idas.Sensitivity.Quadrature]  The sensitivity quadrature function failed in an unrecoverable manner. 
QuadSensRhsFuncFailure [Cvodes.Sensitivity.Quadrature]  The sensitivity quadrature function failed in an unrecoverable manner. 
R  
RecoverableFailure [Sundials]  Indicates a recoverable failure within a callback function. 
RepeatedQuadRhsFuncFailure [Idas.Quadrature]  Convergence test failures occurred too many times due to repeated recoverable errors in the quadrature function. 
RepeatedQuadRhsFuncFailure [Cvodes.Quadrature]  Convergence test failures occurred too many times due to repeated recoverable errors in the quadrature function. 
RepeatedQuadSensRhsFuncFailure [Idas.Sensitivity.Quadrature]  Convergence test failures occurred too many times due to repeated recoverable errors in the quadrature function. 
RepeatedQuadSensRhsFuncFailure [Cvodes.Sensitivity.Quadrature]  Convergence test failures occurred too many times due to repeated recoverable errors in the quadrature function. 
RepeatedResFuncFailure [Ida]  Too many convergence test failures, or unable to estimate the initial step size, due to repeated recoverable errors in the residual function. 
RepeatedRhsFuncFailure [Arkode]  Too many convergence test failures, or unable to estimate the initial step size, due to repeated recoverable errors in the righthand side function. 
RepeatedRhsFuncFailure [Cvode]  Too many convergence test failures, or unable to estimate the initial step size, due to repeated recoverable errors in the righthand side function. 
RepeatedSensResFuncFailure [Idas.Sensitivity]  Too many convergence test failures, or unable to estimate the initial step size, due to repeated recoverable errors in the sensitivity residual function. 
RepeatedSensRhsFuncFailure [Cvodes.Sensitivity]  Too many convergence test failures, or unable to estimate the initial step size, due to repeated recoverable errors in the sensitivity function. 
RepeatedSystemFunctionFailure [Kinsol]  The 
ResFuncFailure [Ida]  The residual function failed in an unrecoverable manner. 
ResReduced [Sundials_LinearSolver]  Indicates that the residual is reduced but without convergence to the desired tolerance. 
RhsFuncFailure [Arkode]  The righthand side function failed in an unrecoverable manner. 
RhsFuncFailure [Cvode]  The righthand side function failed in an unrecoverable manner. 
RootFuncFailure [Arkode]  The rootfinding function failed. 
RootFuncFailure [Ida]  The rootfinding function failed. 
RootFuncFailure [Cvode]  The rootfinding function failed. 
S  
SensNotInitialized [Idas.Sensitivity]  Sensitivity analysis was not initialized. 
SensNotInitialized [Cvodes.Sensitivity]  Sensitivity analysis was not initialized. 
SensResFuncFailure [Idas.Sensitivity]  The sensitivity residual function failed in an unrecoverable manner. 
SensRhsFuncFailure [Cvodes.Sensitivity]  The sensitivity function failed in an unrecoverable manner. 
SystemFunctionFailure [Kinsol]  The 
T  
TooClose [Arkode]  The initial and final times are too close to each other and an initial step size was not specified. 
TooClose [Cvode]  The initial and final times are too close to each other and an initial step size was not specified. 
TooMuchAccuracy [Arkode]  The requested accuracy could not be satisfied. 
TooMuchAccuracy [Ida]  The requested accuracy could not be satisfied. 
TooMuchAccuracy [Cvode]  The requested accuracy could not be satisfied. 
TooMuchWork [Arkode]  The requested time could not be reached in 
TooMuchWork [Ida]  The requested time could not be reached in 
TooMuchWork [Cvode]  The requested time could not be reached in 
U  
UnrecoverableFailure [Sundials_LinearSolver]  Raised on an unrecoverable failure in a linear solver. 
UnrecoverableQuadRhsFuncFailure [Cvodes.Quadrature]  The quadrature function had a recoverable error, but no recovery was possible. 
UnrecoverableQuadSensRhsFuncFailure [Cvodes.Sensitivity.Quadrature]  The sensitivity quadrature function had a recoverable error, but no recovery was possible. 
UnrecoverableRhsFuncFailure [Arkode]  The righthand side function had a recoverable error, but no recovery was possible. 
UnrecoverableRhsFuncFailure [Cvode]  The righthand side function had a recoverable error, but no recovery was possible. 
UnrecoverableSensRhsFuncFailure [Cvodes.Sensitivity]  The sensitivity function had a recoverable error, but no recovery was possible. 
Z  
ZeroDiagonalElement [Sundials_Matrix]  Raised if a zero diagonal element is found during factorization using a
lowlevel routine like
LinearSolver.Iterative.Algorithms.qr_fact,
LinearSolver.Iterative.Algorithms.qr_sol,
or 