I appreciate you for getting back to us here in the Community. Allow me to step in and assist you with the assembly items in POS.
Can you share with me what you're referring to the recipes? Are you trying to import data into the Point of Sale system? Any additional screenshots or detailed information concerning the issue will ensure a timely solution.
If you're using the import process and you're unable to make changes on it, please make sure the data is formatted correctly. For more insights into importing and exporting process, please refer to the article I'm adding on this:
If you encounter issues with the assembly items without getting any error, I recommend contacting our Support Specialists. One of them needs to take over and perform some troubleshooting on your behalf.
You can acquire the contact information through the link I'm attaching below:
Let me know if you have additional questions or if you seek further assistance with regards to the items concern. The Community will be here to help.