签名证书改使用机构证书。

accessType改1
加下下面4个字段：
acqInsCode
merCatCode
merName
merAbbr

其中：
acqInsCode送自己的机构号
merId测试环境符合格式随便送，生产由收单自己的业务人员定
merCatCode测试环境除代收付外的产品送一个真实存在的mcc，生产由收单自己的业务人员定，代收付产品一定要送商户号对应的mcc
merName测试环境符合格式随便送，生产由收单自己的业务人员定
merAbbr测试环境符合格式随便送，生产由收单自己的业务人员定

accNo、customerInfo组装的时候用不加密的方式组装，开发包默认启用了加密的方式，不加密的方式在上下文也有写，只是注释掉了。

对账文件同线下方式获取acomn文件，无联机接口获取

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Replace the merchant signature certificate with institute signature certificate

Set accessType as "1" 

Add the following 4 fields:
acqInsCode
merCatCode
merName
merAbbr

acqInsCode: institute IIN
merId: merID can be any ID (with correct format) under testing environment，merID under production environment should set correctly by the institution.
merCatCode: merCatCode (MCC) should be a real value under testing environment，merCatCode under production environment should set correctly by the institution.
merName: merName can be any ID (with correct format) under testing environment，merName under production environment should set correctly by the institution.
merAbbr: merAbbr can be any ID (with correct format) under testing environment，merAbbr under production environment should set correctly by the institution.

"accNo" and "customerInfo" may be in plain text in the message. The SDK enables encryption method as default option. You may find the non-encryotion method in the context (it's commented out).

Use off-line method to get reconciliation file ("acomn" file), online interface not available
