Hi Vipul:I use the  the root TAG as schema name (In my case “<wechatAccounts />”). It is ok now. There was a typo in the original writing. Sorry to bother you.Thank you very much.Best regards. 

Hi Vipul:Thank you.(2) What determines my own TAG name in the XML as the tag name <recipient /> if my schema is "bfwechat:wechatAccounts"     I used  "wechatAccounts", but it is error when run the JavaScript Code.<recipient xtkschema="nms:recipient" email="john.doe@adobe.com" birthDate="1956/05/04" ...

Hi Vipul:Thank you very much for your quick reply.I read the guide. And have the next detail questions.(1) should I define the method under my own prodct schema?<method name="Write" static="true"> <parameters> <param name="doc" type="DOMDocument" desc="Difference document"/> </parameters> </method> ...

Hi :I create a new schema (named product) in Adobe Campaign. And updated the database.Now I want to write & update & delete the record in the product database. I can't find the API how to do that. Would you like teach me where is the guide of the method or tell me how to do that. Best regards.