Man pages matching name krb524_convert_creds_kdc in section 3:

krb524_convert_creds_kdc.3.en	debian 10 / heimdal-dev
krb524_convert_creds_kdc.3.en	debian 11 / heimdal-dev
krb524_convert_creds_kdc.3.en	debian 12 / heimdal-dev