# MMPBSA\_Error

**URL:** <https://gromacs.bioexcel.eu/t/mmpbsa-error/7450>\
**Category:** User discussions\
**Tags:** analysis-tools\
**Created:** [October 22, 2023, 7:28am UTC](https://gromacs.bioexcel.eu/t/mmpbsa-error/7450 "2023-10-22T07:28:43Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Hossein](https://avatars.discourse-cdn.com/v4/letter/h/9de0a6/32.png) [@Hossein](https://gromacs.bioexcel.eu/u/Hossein)\
**Post date:** [October 22, 2023, 7:28am UTC](https://gromacs.bioexcel.eu/t/mmpbsa-error/7450/1 "2023-10-22T07:28:43Z")

</div>

GROMACS version:2020  
GROMACS modification: Yes/No  
charmm36-jul2022.ff  
I have an error with gmx\_MMPBSA.  
this comment:  
MMPBSA\_Error

The atom 6725 in the complex index is not found in the topology file. Please check that the files are consistent.  
how can i solve?