For maptables, it is possible to define a key field to ensure data integrity. This functionality helps prevent issues where the system might randomly select between duplicates during execution.

To define a key field, follow these steps:

1. Open the MaptableManager.

2. Select a maptable from the overview View Of All Available Maptables.

3. Click Change configuration.

4. Open the tab Edit columns.

5. Select a column.

6. Click Edit.

7. Activate Mark as key column.

   

8. Click Save.

Find more informatione here:

> Checking for duplicates