Microsoft response code 10500 with SIP 403 ('Current call site state prevents fork to this entity') is resolved by verifying that Location-Based Routing is set up correctly.

Checked 2026-09-25

Vendor
Microsoft
Product
Teams Phone Direct Routing
Subsystem
troubleshooting
Deployment
multi-tenant
Region
not restricted
Release range
current as of 2026-09-25
Checked
2026-09-25

Sources

Cite this note

APA

WarmTransfer. (2026, September 25). Teams location-based routing: source note teams-location-based-routing-code-10500. WarmTransfer. https://warmtransfer.net/knowledge/claims/teams-location-based-routing-code-10500

BibTeX

@misc{warmtransfer-claim-teams-location-based-routing-code-10500,
  title  = {Teams location-based routing: source note teams-location-based-routing-code-10500},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/teams-location-based-routing-code-10500},
  note   = {Source note teams-location-based-routing-code-10500, checked 2026-09-25}
}

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