Publish a Legacy Extension
A legacy extension is a package that is not built in a project context. It does not have a Group ID and an Artifact ID. A legacy extension may comprise a customized PTC solution or a third-party solution/extension that you want to deploy across your enterprise.
Before You Begin
Before you begin publishing your extension using ThingWorx Composer, ensure the following:
• You are using ThingWorx 8.5.3 or later versions.
• Your ThingWorx instance is registered and connected with Solution Central. See Register Your ThingWorx Instance for detailed instructions.
• The extension you want to publish exists in ThingWorx. Detailed instructions for importing extensions are available in the ThingWorx Help Center.
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• Ensure that the extension name does not contain spaces.
• The published extension will not reflect updates made after importing the extension.
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• You are a member of the SolutionCentralDevelopers group, which has been granted permissions to publish extensions by the Site Administrator. Contact your Site Administrator for help with adding you to this group.
Publish a Legacy Extension to Solution Central
1. Log in to ThingWorx Composer.
2. Click > .
3. From the list of installed extension packages, select the extension you want to publish and click 
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.| | For publishing the extension, you should be connected to Solution Central. Refer to Register Your ThingWorx Instance for help with connecting to Solution Central. |
4. On the Publish to Solution Central dialog box, the following non-editable fields are pre-populated: Name, Version, Group ID, Artifact ID, Description, and Minimum Required ThingWorx Version. Review these details and click Continue.
◦ If the Description is longer than 100 characters, it will be truncated to 100 characters.
◦ If the entries in any other fields are longer than 100 characters, your attempt to publish may be rejected. Contact the extension developer to reduce the length of the respective fields.
◦ Ensure that the combination of the Group ID, Artifact ID, and Version is unique.
5. Click OK to close the Publish to Solution Central dialog box.
Publishing will continue in the background and may take several minutes. You will receive a notification once the extension package is published.
Published packages are available as solutions in Solution Central and in ThingWorx Composer at > > .