Hi Claudio Orellana...
Have you checked the Overview Notes For 882 pl 12 .. They mentioned that you should first upgrade to PL11 then with PL12 check wtih the Notes...
1846344 - Overview Note for SAP Business One 8.82 PL12
Symptom
This SAP Note contains collective information related to upgrades to SAP Business One 8.82 Patch Level 12 (B1 8.82 PL12) from previous SAP Business One releases.
In order to receive information about delivered patches via email or RSS, please use the upper right subscription options on http://service.sap.com/~sapidp/011000358700001458732008E
Solution
Patch installation options:
- SAP Business One 8.82 PL12 can be installed directly on previous patches of SAP Business One 8.82
- An upgrade to SAP Business One 8.82 PL11 must be performed first when upgrading from SAP Business One versions:
- 8.81;8.8;2007A SP01;2007 A SP00;2007B SP00;2005A SP01;2005B.
Patch content:
SAP Business One 8.82 PL12 includes all corrections from previous patches for releases 8.82, 8.81, 8.8, 2007, and 2005.
For details about the contained corrections, please see the SAP Notes listed in the References section.
Notes: SAP Business One 8.82 PL12 contains B1if version 1.17.5
Patch download:
Open http://service.sap.com/sbo-swcenter -> SAP Business One Products -> Updates -> SAP Business One 8.8 -> SAP BUSINESS ONE 8.82 -> Comprised Software Component Versions -> SAP BUSINESS ONE 8.82 -> Win32 -> Downloads tab
Hope solves your Issue
Regards
Kennedy