The reason is that the bar code quality is poor and the bar code does not meet the specifications.

1. Poor barcode quality: If the barcode quality is poor, such as blurring, damage, stains, etc. , WeChat scan is unrecognizable. At this time, you can try scanning many times, or manually enter the barcode of the goods to search.

2. The barcode does not meet the specifications: the barcode of the commodity does not meet the international standards, or the foreign barcode specifications are used, which cannot be recognized by WeChat. At this time, you can try to manually enter commodity information to search.