Solution : https://service.sap.com/sap/support/notes/632885 (SAP Service marketplace login required)
Key words : 
application program truncates fields defined, symptom group roster load, writing intoapplication table, crm-iph-xdl, attached correction instruction, variable  'buffer' length, lsmw truncates, 'buffer' length, terms pharma, cms_ext_data_gr_load reason
Related Notes : 
       
| 634869 | SAPKU40001: Support Package 01 for CRM 4.0 |