Limitations of Branches

This feature will be plan based.
The branch UID must be in lower case and only ‘_’ can be used to separate two words.
The maximum number of branches allowed per stack will depend on the product tier.
Once you create a branch, you cannot edit it’s name or source branch.
The maximum character length for a branch ID is 15
You cannot edit the name of the main branch.
You cannot delete a branch that is being used as a source branch.
The Compare and Merge features are currently available only through CMA and CLI for the content type and global field modules only.

More articles in "More about Branches and Aliases"