Hi Ricardo,
Could you check Solution Manager system for ST-PI modules. I feel the issue is appearing from Solution Manager and error is getting generated into satellite system ECC.
Also if you can dig more into the logs you may find more information on the issue.
May be you can check on the below SAP notes
| 1899404 | SQL errors 15250 and 15234 appear in the system log |
| 1874931 * | Error 'Could not find stored procedure sap_get_freespace' in Solution Manager |
Hope this helps.
Regards,
Deepak Kori