# Troubleshooting Inconsistent shifts error

**URL:** <https://gromacs.bioexcel.eu/t/troubleshooting-inconsistent-shifts-error/9421>\
**Category:** User discussions\
**Created:** [June 18, 2024, 1:11pm UTC](https://gromacs.bioexcel.eu/t/troubleshooting-inconsistent-shifts-error/9421 "2024-06-18T13:11:49Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![rpsingh](https://avatars.discourse-cdn.com/v4/letter/r/c57346/32.png) [@rpsingh](https://gromacs.bioexcel.eu/u/rpsingh)\
**Post date:** [June 18, 2024, 1:11pm UTC](https://gromacs.bioexcel.eu/t/troubleshooting-inconsistent-shifts-error/9421/1 "2024-06-18T13:11:49Z")

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GROMACS version: 2023.1  
GROMACS modification: No

I am running a simulation where gmx mdrun and post-processing tools like gmx distance complain “There were 20 inconsistent shifts. Check your topology”. Looking at the structure, there appears to be no issues. The molecule is periodic and periodic-molecules = yes is in mdp file.

When troubleshooting issues in grompp, -debug flag gives a lot of information about errors. Is there something similar I can use to get more details about the errors appearing with gmx mdrun. Secondly, how can I fix the inconsistent shifts error?

Thanks,  
Raman

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<div class="post-metadata">

**Author:** ![rpsingh](https://avatars.discourse-cdn.com/v4/letter/r/c57346/32.png) [@rpsingh](https://gromacs.bioexcel.eu/u/rpsingh)\
**Post date:** [June 27, 2024, 4:51pm UTC](https://gromacs.bioexcel.eu/t/troubleshooting-inconsistent-shifts-error/9421/2 "2024-06-27T16:51:44Z")

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Can someone please help me with this issue.

Thanks,  
Raman