Solution : https://service.sap.com/sap/support/notes/894688 (SAP Service marketplace login required)
Key words :
unchanegd srm items related statuses, existing teco service order, service order teco-ed, purchase order change document, purchase order document, terms external requisitions, applied solution apply, active po document, service order, items prevents
Related Notes :
| 878946 | One item TECO prevents other items from changing in ext. PO |