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<@1145576664366055464> what call disconnection reason will I see if a number was declined due to no being e164 valid?

Thanks for tagging me <@411738504779792414>. I'll look through relevant sources and get back to you shortly.

### Answer
 

If a phone number is not valid (including not being in E.164 format) , you will see the disconnection reason `invalid_destination`. [(1) ](<https://docs.retellai.com/reliability/debug-outbound-call>) [(2) ](<https://docs.retellai.com/reliability/debug-call-disconnect>)

This reason represents cases where the destination phone number is invalid. [(1) ](<https://docs.retellai.com/reliability/debug-outbound-call>) The call status will show as `not_connected`. [(2) ](<https://docs.retellai.com/reliability/debug-call-disconnect>)

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To learn more, see the sources I considered:

[[1] Debug outbound connection issues](https://docs.retellai.com/reliability/debug-outbound-call)
[[2] Debug call disconnection](https://docs.retellai.com/reliability/debug-call-disconnect)
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Feel free to tag <@1145576664366055464> with additional questions. I also appreciate feedback, it helps me improve.