Behavior:
My Platform implementation throws the error: "Decimal is no valid field type"
Solution:
The source of the error message is that the used version of the Platform API does not know the field type "Decimal". It is very likely that the DocuWare system is at least on version 6.10 but the Platform API of the tool is only 6.9 or earlier. Decimal fields were introduced with DocuWare 6.10.
Please check which version of the Platform API your tool uses and update your tool.