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The business application cannot open the signature panel.
What you want to ask is why the business app can't open the signature panel. The reasons are low version, authority problem and network problem.

1, the version is too low: the signature panel function of Shanglian app needs a high version to support, and if the version is too low, the signature panel function cannot be used.

2. Permission problem: If you don't have permission to use the signature panel of Shangtong app, you can't use this function.

3. Network problem: The Business Connect application needs to be connected to the Internet to use all its functions. If the network environment is unstable or has problems, it will affect the use of the signature panel.