Function Compute provides service identification numbers for ICP filing when you purchase any resource plan.
If you use the same Alibaba Cloud account to purchase a cloud service instance and apply for an Internet content provider (ICP) filing, you can directly select the instance in the ICP application without needing to apply for a service identification number in advance. The system will automatically generate a service identification number for the instance. For more information, see the instructions on the Alibaba Cloud ICP Filing system.
If the Alibaba Cloud account that you use to purchase an instance is different from the Alibaba Cloud account that you use to apply for an ICP filing, you can refer to (Optional) Authorize another Alibaba Cloud account for ICP filing.