I want add a custom field in header of transaction FB60, FB65 and MIRO. I want apply OSS note 2639131.
I don't have access any BADI BADI_FDCB_SUBBAS0x.
I read the blog : https://blogs.sap.com/2018/06/18/extending-bkpf-table-by-adding-custom-or-zz-fields-in-sap/ but I cannot extend SUBBAS04 because it is already implemented by SAP.
I don't want modify SAP standard if it's possible. I want find a BADI, enhancement, ... if it's possible.