(We made a simple java desktop client (opcBasic) with Prosys SDK. It worked fine on windows thanks..)

I tried to build the same applikation on android system. It doesn’t work correctly, it throws exception (SecureIdentityException e1- see source code below):
exception: “Cannot create certificate for application”
(try-catch bloks are required only on Android)

try {
identity = ApplicationIdentity.loadOrCreateCertificate(appDescription, “Sample Organisation”,
/*Private Key Password */”opcua”,
/* Key File Path */privatePath,
/* CA certificate & private key */issuerCertificate,
/* Key Sizes for instance certificates to create */keySizes,
/* Enable renewing the certificate */true);
} catch (SecureIdentityException e1) {
e1.printStackTrace();
} catch (IOException e1) {
e1.printStackTrace();
}

Parameter Values:
on Windows:
privatePath: PKI\CA\private
appDescription:ApplicationDescription: ApplicationDescription (id=2129670906)
DiscoveryUrls=null
DiscoveryProfileUri=null
GatewayServerUri=null
ProductUri=null
ApplicationUri=null
ApplicationType=null
ApplicationName={class org.opcfoundation.ua.builtintypes.LocalizedText}(en) opcBasic
issuerCertificate: null
keySizes: null
———————————————————————————————
on Android:
privatePath: PKI/CA/private
appDescription: ApplicationDescription: ApplicationDescription (id=1100650048)
DiscoveryUrls=null
DiscoveryProfileUri=null
GatewayServerUri=null
ProductUri=null
ApplicationUri=null
ApplicationType=null
ApplicationName={class org.opcfoundation.ua.builtintypes.LocalizedText}(en) opcBasic
issuerCertificate: null
keySizes: null

Thanks in advanced!
Have you ever come accross such a problem like this before?