Solution : https://service.sap.com/sap/support/notes/912839 (SAP Service marketplace login required)
Key words :
alter table sql statement, long alter table, table width exceeds, importing support packages, alter table, support package 9, support package 14, table kmc_uwl_item, maxdb version 7, error occurs
Related Notes :
| 883533 | -2003 output columns too long. |
| 832968 | Central Note - SP Stack 14 - SAP NW 04 EP 6.0 on Web AS 6.4 |