Girls, hello! Today I finished with documents to apply for maternity l…

Girls, hello! Today I finished with documents to apply for maternity leave, because as I work in the hotel business, during the CPP period we did not pay social contributions, they gave me a certificate with a coefficient of "0" so that these days would not be counted. I have a question, has anyone encountered such a certificate from the ZON or first from the GCZP?