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dfChkIva()
Check IVA equality
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Syntax:

     dfChkIva(<cIva>) --> lRet

Parameters:

     <cIva>     IVA Entry to check

Returns:

     <lRet> If .T. the IVA entry contained in cIva is correct

Description:

     Permits of sapare if a date IVA match, cIva, correct or is less

Example:

     IF dfChkIva("00773580014")
        ?  "Match correct iva"
     ENDIF

See also:

     dfChkCF(), dfCodQua()