Due to storage limitations, when you export components into a project, you'll be limited on the number of components a project can have depending on the subscription plan that the project owner has:
Free plan: 100 components
Basic plan: Unlimited components
Advanced, Team, Organization, and Enterprise plans: Unlimited components
☝️ If you're on the deprecated Starter or Growing Business plans, you'll also have unlimited components per project.
To publish more components, you can upgrade your plan using this link: https://app.zeplin.io/profile/billing