RODA-in creates SIPs on .zip format, are you unzipping them before uploading?

Well, E-ARK SIPs are supposed to be sent in ZIP format. Please try that way.

RODA supports many SIP formats and you can customize it with your own SIP format, so it could receive files that are not a ZIP. But it would not support uploading files with the same name to the same folder. You would need to create different folders for it. Usually, file systems do not allow that, but I guess you might be trying to upload a folder, which in some Web Browsers will try to upload all files under the folders, which will get you this odd behaviour. You can, alternatively, upload directly to the transfer folder, or share the transfer folder with SFTP or Windows share, so it would be easier to copy large amounts of files and folders.

Tried uploading the zipped file from roda-in. It injected fine but when i started a process it errored

Hello, it seems you have tried to ingest an E-ARK SIP version 1 but selected and E-ARK SIP version 2 on the ingest workflow options.

So once more using the default RODA-in package injested using the SIP1 type and still it failed

Additionally I cannot set in the RODA-IN mets file any type OAISPACKAGETYPE which is required in a MET.xml

The OAISPACKAGETYPE error is about E-ARK SIP version 2 internal attributes, and is set in RODA-in when selecting E-ARK SIP 2 as the SIP type on creation. But this was fixed when you selected the correct E-ARK SIP type for the produced version.

Now, it seems that when you were filling up the EAD metadata, you did not fill up all the necessary metadata, specifically the level attribute. In RODA-in you have a button to validate the produced metadata.

NOTE: screenshot doesn't show it well, but the button is the check mark ✔️

This usually does not happen, as a description level is selected by default, so you must have deselected it.

Please ensure descriptive metadata is valid and re-submit the SIP.