[TYPO3-mvc] table mapping not working

[Stephen Bungert]

I'm trying to get table records in a BE module via ajax.

For some reason my repository is not mapping the table correctly. This is 
what i see in the ajax answer:

... snipped

Table 'typo3_4-6.tx_sbportfolio2_domain_model_beimport' doesn't exist

snipped ...

Tx_SbPortfolio2_Domain_Model_BeImport is my model name. There are no tables, 
I have mapped Tx_SbPortfolio2_Domain_Model_BeImport to another table:

---
 # Module configuration
module.tx_sbportfolio2 {
 persistence {
  storagePid = 15

     classes {
       Tx_SbPortfolio2_Domain_Model_BeImport {
         mapping {
           tableName = tx_sbportfolio_items
           columns {
             title.mapOnProperty = title
             crdate.mapOnProperty = crdate
             tstamp.mapOnProperty = tstamp
           }
         }
       }
     }
 }
 view {
  templateRootPath = {$module.tx_sbportfolio2.view.templateRootPath}
  partialRootPath = {$module.tx_sbportfolio2.view.partialRootPath}
  layoutRootPath = {$module.tx_sbportfolio2.view.layoutRootPath}
 }
}
---

Why isn't my tableName used, do I need to do anything else?

--
Stephen