Error while doing multiple object updation from EP ! object lock error

Question

HI all,
I am doing multiple  object updation using a standard RFC(BAPI_PROJECT_MAINTAIN). The RFC i am calling from Enterprise portal. I am sending data to RFC one by one. But the error i am getting is object is locked by user so data can't be save.
Though i am using Lock and unlock method before and after calling RFC the project lock error comes up.
What might be the reason
regards
sandeep

Answer 1

Hi Sandeep,
Is the RFC you use for locking in the same model as the bapi BAPI_PROJECT_MAINTAIN? If it is not then you are using two connections for communication with the sap R/3 backend.
You can do 2 things.
1. You could add the RFCs for locking in the same model as the BAPI_PROJECT_MAINTAIN
2. Instead of adding the RFCs in one model synchronize the connections the models use as follows:
IWDDynamicRFCModel model1 = (IWDDynamicRFCModel) WDModelFactory.getModelInstance(Model1.class);
IWDDynamicRFCModel model2 = (IWDDynamicRFCModel) WDModelFactory.getModelInstance(Model2.class);
model1.setConnectionProvider(model2);
You can do this in the wdDoInit. This will make sure both models use the same connection but closing a connection will close both at the same time.
The same problem applies to commit/rollback functionality.
Regards,
Jeschael