Solution : https://service.sap.com/sap/support/notes/538409 (SAP Service marketplace login required)
Key words : 
account management > product management > product definition > attribute, product checks -> synchronize attribute hierarchie, sap support package, attribute hierarchy, product configurator, product types, terms product, application clients, tfipr_attrtree reason, check products
Related Notes : 
       
| 548999 | Deletion of product attributes flow data bal. confirmation | 
| 413817 | Maintenance strategy Transaction Banking (BANK-TRBK 10/20) |