Solution : https://service.sap.com/sap/support/notes/309685 (SAP Service marketplace login required)
Key words :
additional key words sapdv70a, affected message type, error message td421, attached program corrections, program error, manually create, transmission medium 5, external sending, communication strategy, 'parameter device=&
Related Notes :
| 429806 | Entry of services performed is not sent per e-mail |
| 327314 | Changed messages not issued |
| 323720 | Communication types in communication strategy |
| 191470 | Purchase order as an e-mail |