X509Certificate (CCSID / PCSID) not valid certificate

Operation Successfully Complete !, With some errors
Warning:
X509Certificate (CCSID / PCSID) used for signing is not valid certificate (CCSID / PCSID) for this VAT Registration Number.

every thing was working fine and the certificate still valid ,found B2C can not be signed locally . what is the issue ?

@Ankit.K.Tiwari dear Ankit ,we are already using PCSID and not using CCSID only once. still the issue is the same since 2 weeks ,it is giving reported but with warning