# Cannot merge \[properties\] mappings error

**URL:** <https://discuss.elastic.co/t/cannot-merge-properties-mappings-error/275506>\
**Category:** Elasticsearch\
**Tags:** elastic-stack-machine-learning\
**Created:** [June 9, 2021, 10:26pm UTC](https://discuss.elastic.co/t/cannot-merge-properties-mappings-error/275506 "2021-06-09T22:26:37Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![pkward](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/pkward/32/95305_2.png) [@pkward](https://discuss.elastic.co/u/pkward)\
**Post date:** [June 9, 2021, 10:26pm UTC](https://discuss.elastic.co/t/cannot-merge-properties-mappings-error/275506/1 "2021-06-09T22:26:37Z")

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Hello,

I'm having a hard time with my running my ML Job due to my fields. Can I correct this by modifying my mappings? I've pasted my error below:

`"statusCode": 400, "error": "Bad Request", "message": "[status_exception]: cannot merge [properties] mappings because of differences for field [imports]; mapped as [{properties={7YX={type=object}, ADVAPI32={properties={DLL={type=text, fields={keyword={type=keyword, ignore_above=256}}}, dll={type=text, fields={keyword={type=keyword, ignore_above=256}}}}}, ATL={properties={DLL={type=text, fields={keyword={type=keyword, ignore_above=256}}}}}, COMCTL32={properties={DLL={type=text, fields={keyword={type=keyword, ignore_above=256}}}, dll={type=text, fields={keyword={type=keyword, ignore_above=256}}}}}, COMDLG32={properties={DLL={type=text, fields={keyword={type=keyword, ignore_above=256}}}, dll={type=text, fields={keyword={type=keyword, ignore_above=256}}}}}, CRTDLL={properties={dll={type=text, fields={keyword={type=keyword, ignore_above=256}}}}}, CRYPT32={properties={dll={type=text, fields={keyword={type=keyword, ignore_above=256}}}}}, DFLREG={properties={dll={type=text, fields={keyword={type=keyword, ignore_above=256}}}}}, DFLSCR={properties={dll={type=text, fields={keyword={type=keyword, ignore_above=256}}}}}, DNSAPI={properties={dll={type=text, fields={keyword={type=keyword, ignore_above=256}}}}}, DSOUND={properties={dll={type=text, fields={keyword={type=keyword, ignore_above=256}}}}}, DTCommonRes={properties={dll={type=text, fields={keyword={type=keyword, ignore_above=256}}}}}, ESENT={properties={dll={type=text, fields={keyword={type=keyword, ignore_above=256}}}}}, GDI32={properties={DLL={type=text, fields={keyword={type=keyword, ignore_above=256}}}, dll={type=text, fields={keyword={type=keyword, `

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 7, 2021, 11:22pm UTC](https://discuss.elastic.co/t/cannot-merge-properties-mappings-error/275506/3 "2021-07-07T23:22:05Z")

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