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Edwin VijayEdwin Vijay 

getDmlMessage returning complete error message and not truncated one

Apex Code:
try{               
                    update(itemsToUpdate);
                    showsuccess = true;
                  }
                catch(DmlException e){
                    for(integer i=0; i < e.getNumDml(); i++){
                        ApexPages.addMessage(new ApexPages.Message(ApexPages.Severity.ERROR,e.getDmlMessage(i)));
                     }
                    showsuccess = false;
                    return null;
                }

Error message:
OppLnItemTrigger: execution of AfterUpdate caused by: System.DmlException: Update failed. First exception on row 0 with id 0064000000f8EeIAAU; first error: FIELD_CUSTOM_VALIDATION_EXCEPTION, The selected product does not exist in EDW yet.Please update your selection or try again later.: [] Class.TriggerHandlerBase.updateObjects: line 172, column 1 Class.TriggerHandlerBase.processObjects: line 61, column 1 Class.TriggerDispatcherBase.execute: line 128, column 1 Class.OppLnItemDispatcher.afterUpdate: line 78, column 1 Class.TriggerFactory.execute: line 43, column 1 Class.TriggerFactory.createTriggerDispatcher: line 19, column 1 Trigger.OppLnItemTrigger: line 2, column 1

I only want to display the error message: 'The selected product does not exist in EDW yet.Please update your selection or try again later'

Any help is appreciated. THANKS 
SandhyaSandhya (Salesforce Developers) 
Hi,

Try using 
ApexPages.addMessages(e);

Please refer below post there are different solutions it may help you.

http://stackoverflow.com/questions/11607007/how-to-show-only-extracted-error-message-from-custom-validation-on-a-visualforce
 
Hope this helps you!

Please mark it as solved if this helps you so that it will make available for other as a proper solution.

Thanks and Regards
Sandhya