Hi Heinz,
>> The dropdown list is based on a queue, which is filled after selecting the spare part.
It would be better if it was based on a table, with an appropriate filter. Building the queue manually yourself is unnecessary work. The filter would be based on the SessionValue of the Spare Part lookup.
The stock-locations dropdown should be added to the Spare Part field, on the Client-Sdie tab, Reset list.
>> By the way: in the lookup settings of my spare part field I have defined a description field (name of spare part), this is not shown on screen. What can be wrong here?
You need a single-component (preferably unique) key on the description field in the table.
Cheers
Bruce