Issue:    PO approval workflow is failing with the
error
| 
   
Failed
  Activity 
 | 
  
   | 
  
   
Get PO Attributes  
 | 
 
| 
   
Activity
  Type 
 | 
  
   | 
  
   
Function  
 | 
 
| 
   
Error
  Name 
 | 
  
   | 
  
   
-6512  
 | 
 
| 
   
Error
  Message 
 | 
  
   | 
  
   
ORA-06512: at line  
 | 
 
| 
   
Error
  Stack 
 | 
  
   | 
  
   
Wf_Engine_Util.Function_Call(PO_POAPPROVAL_INIT1.GET_PO_ATTRIBUTES,
  POAPPRV, 562566-638453, 265219, RUN)  
 | 
 
Solution: There might be multiple
reasons. Below would be one of the issues.
The PO distribution line id is having quantity ordered ‘0’ and it
is causing the issue.
I found one Metalink id Purchase Agreement Fails Under
GET_PO_ATTRIBUTES Activity (Doc ID 460332.1)
After performing the below data fix. It resolved my issue.
Delete from po_distributions_all
where po_header_id = '562566'
and po_line_id=565160
and req_distribution_id=219153