# PCGetFailedReason
Gets the reason a `PCSetUp()` failed or `PC_NOERROR` if it did not fail 
## Synopsis
```
#include "petscksp.h" 
PetscErrorCode PCGetFailedReason(PC pc, PCFailedReason *reason)
```
Logically Collective on pc


## Input Parameter

- ***pc -*** the preconditioner context



## Output Parameter

- ***reason -*** the reason it failed





## Note
This is the maximum over reason over all ranks in the PC communicator. It is only valid after
a call `KSPCheckDot()` or  `KSPCheckNorm()` inside a `KSPSolve()`. It is not valid immediately after a `PCSetUp()`
or `PCApply()`, then use `PCGetFailedReasonRank()`


## See Also
 PC`, ``PCCreate()`, `PCApply()`, `PCDestroy()`, `PCGetFailedReasonRank()`, `PCSetFailedReason()`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/interface/precon.c.html#PCGetFailedReason">src/ksp/pc/interface/precon.c</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/ksp/pc/interface/precon.c)


[Index of all PC routines](index.md)  
[Table of Contents for all manual pages](/docs/manualpages/index.md)  
[Index of all manual pages](/docs/manualpages/singleindex.md)  
