# Error with Number Management API when updating phone numbers

**URL:** <https://devforum.zoom.us/t/error-with-number-management-api-when-updating-phone-numbers/128495>\
**Category:** Contact Center\
**Created:** [February 25, 2025, 4:41pm UTC](https://devforum.zoom.us/t/error-with-number-management-api-when-updating-phone-numbers/128495 "2025-02-25T16:41:27Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ereyes](https://avatars.discourse-cdn.com/v4/letter/e/e8c25b/32.png) [@ereyes](https://devforum.zoom.us/u/ereyes)\
**Post date:** [February 25, 2025, 4:41pm UTC](https://devforum.zoom.us/t/error-with-number-management-api-when-updating-phone-numbers/128495/1 "2025-02-25T16:41:27Z")

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the following error is returned when attempting to update a BYOC phone number in contact center.

{‘errorCode’: -1, ‘message’: ‘only zoom phone number can be updated sip Group.’}

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**Author:** ![gianni.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/gianni.zoom/32/32523_2.png) [@gianni.zoom](https://devforum.zoom.us/u/gianni.zoom)\
**Post date:** [February 26, 2025, 8:49pm UTC](https://devforum.zoom.us/t/error-with-number-management-api-when-updating-phone-numbers/128495/2 "2025-02-26T20:49:05Z")

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Hi @ereyes please share the direct API endpoint you’re using.