server-tools/base_external_dbsource/security/ir.model.access.csv

1	id	name	model_id:id	group_id:id	perm_read	perm_write	perm_create	perm_unlink
2	access_base_external_dbsource_group_system	bae_external_dbsource_group_system	model_base_external_dbsource	base.group_system	1	1	1	1