# DMPlexSetMigrationSF
Sets the SF for migrating from a parent DM into this DM 
## Synopsis
```
#include "petscdmplex.h"   
PetscErrorCode DMPlexSetMigrationSF(DM dm, PetscSF migrationSF)
```

## Input Parameters

- ***dm        -*** The DM
- ***naturalSF -*** The PetscSF


Note: It is necessary to call this in order to have DMCreateSubDM() or DMCreateSuperDM() build the Global-To-Natural map




## See Also
 `DMPlexDistribute()`, `DMPlexDistributeField()`, `DMPlexCreateMigrationSF()`, `DMPlexGetMigrationSF()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/plex/plexnatural.c.html#DMPlexSetMigrationSF">src/dm/impls/plex/plexnatural.c</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/dm/impls/plex/plexnatural.c)


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