# Service map - port number

**URL:** <https://discuss.elastic.co/t/service-map-port-number/373626>\
**Category:** APM\
**Tags:** ui\
**Created:** [January 24, 2025, 10:37am UTC](https://discuss.elastic.co/t/service-map-port-number/373626 "2025-01-24T10:37:55Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![searchwithme](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/searchwithme/32/137075_2.png) [@searchwithme](https://discuss.elastic.co/u/searchwithme)\
**Post date:** [January 24, 2025, 10:37am UTC](https://discuss.elastic.co/t/service-map-port-number/373626/1 "2025-01-24T10:37:55Z")

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Hi I see the service map in the documentation and I’d like to know why some services have port number next to them, some don’t. How to configure the port number for the services?

 ![IMG_4268](https://us1.discourse-cdn.com/elastic/original/3X/c/d/cd2ccfc858037c96c54fd5895dc2c184bdb82fca.jpeg)