# Medcat multiprocessing

**URL:** <https://discourse.cogstack.org/t/medcat-multiprocessing/315>\
**Category:** Uncategorized\
**Created:** [May 17, 2024, 10:18am UTC](https://discourse.cogstack.org/t/medcat-multiprocessing/315 "2024-05-17T10:18:30Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![gneuron](https://avatars.discourse-cdn.com/v4/letter/g/67e7ee/32.png) [@gneuron](https://discourse.cogstack.org/u/gneuron)\
**Post date:** [May 17, 2024, 10:18am UTC](https://discourse.cogstack.org/t/medcat-multiprocessing/315/1 "2024-05-17T10:18:30Z")

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Does the medcat multiprocessing method deletes duplicate values of id in the input data frame with id and text? I have a scenario where i have multiple text related to single id. When i tried this multiprocessing function i noticed that only one text related to id is getting annotated.

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**Author:** ![anthony.shek](https://avatars.discourse-cdn.com/v4/letter/a/b782af/32.png) [@anthony.shek](https://discourse.cogstack.org/u/anthony.shek)\
**Post date:** [May 20, 2024, 8:30am UTC](https://discourse.cogstack.org/t/medcat-multiprocessing/315/2 "2024-05-20T08:30:41Z")

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document id should be unique per document