The reasons why Huawei s1730s generates RSA key errors are:

1. The signtype setting is wrong. The solution is to check whether the signtype setting is correct and set the key format according to the signature.

2. The open platform is not configured with the merchant's public key. The solution is to configure the public key or public key certificate corresponding to the signature algorithm under the correct appid.

3. The key does not match. The solution is to ensure that the uploaded merchant public key matches the merchant private key used in the program.