# Person of Significant control API error 500

**URL:** <http://forum.companieshouse.gov.uk/t/person-of-significant-control-api-error-500/10786>\
**Category:** API Issues\
**Created:** [January 21, 2025, 11:21am UTC](http://forum.companieshouse.gov.uk/t/person-of-significant-control-api-error-500/10786 "2025-01-21T11:21:39Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![voracityemail](http://forum.companieshouse.gov.uk/letter_avatar_proxy/v4/letter/v/b77776/32.png) [@voracityemail](http://forum.companieshouse.gov.uk/u/voracityemail)\
**Post date:** [January 21, 2025, 10:08pm UTC](http://forum.companieshouse.gov.uk/t/person-of-significant-control-api-error-500/10786/2 "2025-01-21T22:08:51Z")

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Welcome - I just tried this (some hours after you report) and it works correctly for me e.g. no 500 error.

Do you have any odd things (such as incorrectly URL-encoded parameters) in the URL you’re requesting? That seems the most likely cause.

I checked and it doesn’t seem to be the outstanding issue Companies House have [where having a trailing “/” seems to cause errors with some endpoints - but not with others](https://forum.aws.chdev.org/t/api-update-release-date-question-for-trailing-bug-fix/8472)  
… I’ve just tried that with the basic [PSC list endpoint](https://developer-specs.company-information.service.gov.uk/companies-house-public-data-api/reference/persons-with-significant-control/list) and that caused no issues e.g. both the following return a normal result as JSON and not an error message and/or 500 status.

curl -u MY\_API\_KEY: “[https://api.company-information.service.gov.uk/company/NF004299/persons-with-significant-control/](https://api.company-information.service.gov.uk/company/NF004299/persons-with-significant-control/)”

curl -u MY\_API\_KEY: “[https://api.company-information.service.gov.uk/company/NF004299/persons-with-significant-control](https://api.company-information.service.gov.uk/company/NF004299/persons-with-significant-control)”

(Note \* it’s still affecting the Company Profile endpoint, just checked.)

If the problem persists for you you can search this forum to see if there’s reference to a similar situation as you’re facing.

Alternatively if you would like help from other forum users you could try posting as much data as you can e.g.

- exactly the URL you’re requesing (endpoint)
- whether you’ve managed to use this successfully before (or indeed any part of the API)
- plus any other details of the request you can e.g. http headers if you know\* , details of the environment / language / tool you’re using to send the request in. \* The only thing you should avoid is posting your whole API key or [the complete http](https://en.wikipedia.org/wiki/Basic_access_authentication#Client_side) `Authorization: Basic ...` header.

Hope this helps.

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