Solution : https://service.sap.com/sap/support/notes/580338 (SAP Service marketplace login required)
Key words :
transaction se91 create message c2281, externally procured component &v1&, externally procured component & v1&, externally procured component, information message c2281, externally procured components, inconsistent component data, purchasing detail screen, reservation/preq manually, master data log