Solution : https://service.sap.com/sap/support/notes/1359358 (SAP Service marketplace login required)
Key words : 
multirow set type crmm_pr_taxmessage, downloading excise duty data, excise duty information, terms excise tax, multiple records present, attached correction instructions, bdoc validation error, product data, validation error, initial download
Related Notes : 
       
| 1364367 | SAP CRM 5.2 - SP08 | 
| 1348254 | SAP CRM 2005 - SP Stack 15 | 
| 1304447 | SAP CRM 2007 - SP-Stack 06 |