Unable to Append Additional IDs to Existing ID Types Without Deleting Current Entries

[lhaibach]

Steps to reproduce

• Go to https://boreholes.swissgeol.ch.
• Click on any borehole, then click on "Edit".
• Add an additional ID Type.
• Observe behavior described below.

Expected behavior
We would like to append new IDs to existing ID Types, as sometimes the same borehole has multiple IDs (e.g., https://boreholes.swissgeol.ch/18409 has two InfoGeol IDs). It should be possible to enter new ID entries without needing to delete the current ID of the same ID Type. Maybe each ID should be stored separately in the database.

Current behavior
Currently, it is possible to have several IDs for the same ID Type. However, to append a new ID, the existing entry must first be deleted, else you get the error message"ID type already in use". Both the previously existing ID and the new ID must then be re-entered manually.

Sreenshot