Where can I inquire about the record information of the purchase contract in Yunnan Province?

Since 2006, all sales contracts have been signed online. Before signing online, it is generally to initiatively confirm that the contract is correct and there is no objection, and then sign online. After the online signing of commercial housing, the developer records the contract, obtains the record number after being audited by relevant departments, prints out the contract text, and the buyer and the seller sign and seal, each holding its own copy. After the contract is signed, the real estate management department will return a 9-digit record number beginning with 06 after review, indicating that the contract has been successfully filed. You can log on to the local real estate market information network, type in relevant information, and inquire about the contract registration and filing. After consulting the real estate bureau that handles the contract registration and filing with the developer, you can go there in person to check the contract registration and filing. If you can't find the registration record number of the purchase contract online, there may be two reasons: it may be that the online information is not updated in time, so just postpone the inquiry for a few days. Maybe I mistook the contract number for the contract registration record number and accidentally entered the wrong number.