Since May 12th, 2018 GS1 Belgilux and GS1 Netherlands are using the same data model for the FMCG sector. Suppliers are therefore able to use the same list of attributes to create their products sheets in GDSN for both Belgium, Netherlands and Luxembourg.
Please note that it is still required to create separate entries in GDSN for each target market if products are sold in different countries. Local differences are still possible based on local requirements (e.g. tax information).
The BeNeLux data model (list of attributes and their corresponding instructions) is available via the Attribute Explorer.