支付开发问题

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支付开发问题Pay for development issues

Excuse me, the merchant number is a small and micro merchant number, which can't log in to the background. I need to generate a signature for development. I'll refer to it https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=7_7&index=6 The paysign signature needs to be generated for development. The secret key of the merchant number is required for signature generation. How can I get the secret key?

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