When you issue a “Send” or “send and receive” command, first ArchiCAD checks your local data (that you are about to send) to make sure no bad data or corrupt information is sent to the server. The data passes this check but still, the server refuses to accept this. This usually happens when there are somehow modified elements in your local cache that you don’t actually own.
Note: This error message may also occur when the BIM Server can not write the project data to the “Project” folder on the BIM server, possibly because the hard drive space is insufficient.
Solution:
You will not be able to send your changes, so you will need to reload the project from the server, losing your local project data. To prevent data loss, you can (and should) save your local project data as a PLN file before reloading from server. After saving out a PLN, you should “reload project from server” and then manually copy/paste elements from the PLN back to the Teamwork project.