Solution : https://service.sap.com/sap/support/notes/329334 (SAP Service marketplace login required)
Summary :
In SAP, Customizing settings in field selection for Transaction MIGO may specify fields as 'ready for input,' 'required entry field,' 'display,' or 'hidden.' However, not all these settings effectively transfer to Transaction MIGO. The maintenance tool for field selection works generically across fields, displaying all potential settings regardless of specific program constraints. Prioritization is given to program control over Customizing settings. For instance, despite Customizing configurations, fields inapplicable to program requirements (e.g., batch fields when materials aren't batch-managed) will correctly remain hidden. Furthermore, in MIGO, dependency settings within field customizations are not supported.
Key words :
influencing fields solution, generic basis tool, system correctly hides, storage location key, storage location description, 'required entry field', required entry field, field selection, 'display field', batch field