Solution : https://service.sap.com/sap/support/notes/494868 (SAP Service marketplace login required)
Key words : 
rstxinsh repair report, consistency checks, higher clients, terms sapscript, inconsistent forms, language transport, job_rstlan_upgrade reason, solution implement, attached correction, client cascade
Related Notes : 
       
| 454421 | RSTXINSH: Performance when updating the STXL table | 
| 326801 | Activating SAPscript forms after language transport |