Solution : https://service.sap.com/sap/support/notes/487350 (SAP Service marketplace login required)
Key words :
create text symbol tp9, paersonalized mail form, data dictionary field, program error solution, empty field, form 'crm_im_datatype_check ', pressing 'enter', atributes descriptiosn, logon language, terms attribute
Related Notes :
| 495654 | Short dump 'DATA_OFFSET_NEGATIVE' in CRMD_EMAIL |
| 457902 | Attibute value check in the mail form |