Thanks for your reply.
It's about the configuration of an article in SD (the link is VBAP-CUOBJ). The field VBAP-CUOBJ_CH is not filled. So, this is not about batch data ?
The best solution is probably creating a new datasource for this data.
The funtion for retrieving the data from the configuration is VC_I_GET_CONFIGURATION_IBASE.
How it works:
first you have to figure out on which datasource you want to extract the var. config.
On which object is the configuration defined? Is it sales order? Then you could use 2LIS_11_VAITM, is it on material, then you could use 0material_attr etc.
Then: go to txn CTBW (in ECC).
In basis datasource fill in the datasource from above, client = client, class type = 300 (for variants), the object table is dependent on what you are extracting (for batch f.e. MCHA or MCH1), and then if it is a master data or transactional data datasource.
Then add characteristics and save.
This will generate a new datasource (1CL_...) and can be loaded in a standard way. Create a transformation for it etc.