"Some services have adjustable limits.
When the limit can be adjusted, the tables include Default limit and Maximum limit headers. The limit can be raised above the default limit but not above the maximum limit. Some services with adjustable limits use different headers with information about adjusting the limit.
When a service doesn't have adjustable limits, the following tables use the header Limit without any additional information about adjusting the limit. In those cases, the default and the maximum limits are the same.
If you want to raise the limit or quota above the default limit, open an online customer support request at no charge.
The terms soft limit and hard limit often are used informally to describe the current, adjustable limit (soft limit) and the maximum limit (hard limit). If a limit isn't adjustable, there won't be a soft limit, only a hard limit."
As per https://learn.microsoft.com/en-us/azure/virtual-network/virtual-network-service-endpoint-policies-overview , the default limit is 200 - so you should raise a support request to increase it.
If the above response helps answer your question, remember to "Accept Answer" so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.
hth
Marcin