$ errors.fyi/coap/4.00 163 namespaces · 4,919 codes
coap · coap/4.00
4.00

Bad Request

The server could not understand the request due to malformed syntax, analogous to HTTP 400 Bad Request.

References

In this namespace

2.02 2.03 2.04 2.05 2.31 4.00 4.01 4.02 4.03 4.04 4.05
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