# Unable to run expectation with checkpoint

**URL:** <https://discourse.greatexpectations.io/t/unable-to-run-expectation-with-checkpoint/915>\
**Category:** Archive\
**Tags:** how-to, types-of-expectation, expectation-request\
**Created:** [October 28, 2021, 10:32pm UTC](https://discourse.greatexpectations.io/t/unable-to-run-expectation-with-checkpoint/915 "2021-10-28T22:32:17Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![pmeh](https://avatars.discourse-cdn.com/v4/letter/p/ac8455/32.png) [@pmeh](https://discourse.greatexpectations.io/u/pmeh)\
**Post date:** [October 28, 2021, 10:32pm UTC](https://discourse.greatexpectations.io/t/unable-to-run-expectation-with-checkpoint/915/1 "2021-10-28T22:32:18Z")

</div>

I created expectation using Jupyter notebook and ran it and it worked fine.  
But when I try to run it while creating a checkpoint, it gives me psycopg2 error.

716 def do\_execute(self, cursor, statement, parameters, context=None):  
 → 717 cursor.execute(statement, parameters)  
718

FeatureNotSupported: Column “transaction” has unsupported type “xid”.

The above exception was the direct cause of the following exception:

NotSupportedError Traceback (most recent call last)  
~\AppData\Local\Temp\1/ipykernel\_10968/2205022839.py in   
----\> 1 context.run\_checkpoint(checkpoint\_name=my\_checkpoint\_name)  
2 context.open\_data\_docs()