Key Value,Name,CDDL Type,Brief Description,Change Controller,Reference -1,title,text / tag38,"Short, human-readable summary of the problem shape",IETF (core@ietf.org or art@ietf.org),[RFC9290] -2,detail,text / tag38,Human-readable explanation specific to this occurrence of the problem,IETF (core@ietf.org or art@ietf.org),[RFC9290] -3,instance,~uri,URI reference identifying specific occurrence of the problem,IETF (core@ietf.org or art@ietf.org),[RFC9290] -4,response-code,uint .size 1,CoAP response code,IETF (core@ietf.org or art@ietf.org),[RFC9290] -5,base-uri,~uri,Base URI,IETF (core@ietf.org or art@ietf.org),[RFC9290] -6,base-lang,tag38-ltag,"Base language tag (see [RFC9290, Appendix A])",IETF (core@ietf.org or art@ietf.org),[RFC9290] -7,base-rtl,tag38-direction,"Base writing direction (see [RFC9290, Appendix A])",IETF (core@ietf.org or art@ietf.org),[RFC9290] -8,unprocessed-coap-option,one-or-more,Option number(s) of CoAP option(s) that were not understood,IETF (core@ietf.org or art@ietf.org),"[RFC9290, Section 3.1.1]" -25,request-body-error-position,uint,Byte index inside the request body at which the error became apparent,[CoRE_WG],[draft-amsuess-core-pd-body-error-position-00]