Error message 184

Cause

The error message '%1' already exists. appears when multiple colleagues simultaneously create a purchase or sales invoice. The invoice number is then already in use.

A similar error message can also occur when a sales packing slip is created at the same time.

Solution

1. First determine the highest (= most recently created) process number.
2. Open the Administration Settings in the MKG client.
3. Go to the 'General' tab » 'Process Numbering'.
4. Adjust the sequence number of the correct process number.
5. Create the invoice again.