noun, feminine/kombalidaˈθjon/plural: convalidaciones
convalidación is feminine in Spanish.
validation
“Los titubeos de José Luis Gioja, el titular del PJ, para firmar la convalidación como sustituto del ex auditor Oscar Lamberto.” — The hesitation of José Luis Gioja, the head of the PJ, to sign the validation as a substitute for former auditor Oscar Lamberto.
From convalidar + -ción.