Solution : https://service.sap.com/sap/support/notes/167634 (SAP Service marketplace login required)
Key words :
table field <relational operator> = ' xx xx xx ', table field <relational operator> table field, <table> $field = 'xx xx xx', additional key words ggb0, dialog box 'field limits', changing/entering subfield conditions, field-literal comparisons, field subfield comparison, field-literal comparison, function module 'g_fb_get_partofstring'
Related Notes :
| 301265 | Problems when entering literals with Formula Editor |
| 214374 | VSR: no sub-field validation on date fields |