BW Extractos delta broken after SAP ECC QA refresh completed .

[teja_divya]

Hello SAP BW/ Basis Experts ,

Hope every one is doing great.I need your help in answering the below questions .

I am asking this question from BW Perspective after Our SAP ECC Quality system has been refreshed from ECC Prod. After refresh activity completed ,We have idnetified all the extractors in SAP ECC quality delta queue were corrupted (Delta broken) with error message : "no transfer structure exists .Delta is being recorded anyway error message in delta queue in rsa7" .

--- We have understood delta functionality has been broken for all the extractors and we need to reinit the data sources to enable the detla loads but have below questions .

1. What could be the reason for this error message ? Is it because BASIS did not perform refresh activity correctly keeping these risks in mind ?
2. Will all delta enabled extractors will be broken like this after every sap ecc system refresh ?
3. From BW Perspective we are planning to reinitilize delta to enable the delta loads for these extractors.Tell us one /few saftey meassures we would have taken before SAP ECC refresh happens so that today we should have not seen these types of erros post refresh.

Thanks in advance .

Regards,

Divya Teja.

[teja_divya]

s.sriram abhishek_s32 cincet.frdric2 Request to provide your valuable guidence on this .

Thanks.

[former_member362452]

1. There could be various where things that have gone wrong -From the error its likey to be bound to BDLS, ask if this step went successful and the source system connection works.Did you try to run some full load extracts and see if all is well?
2. Not really, it looks like some activities were not done the way they should have been, this said there will always be teething issues post refresh but not of this magnitude
3. Its worth reconsidering and reviewing the steps done by BASIS and BW part of this whole exercise and documenting the learnings with remediation. There are best practise guide available for refresh, IMO, its not BASIS or BW but collectively looking at what went wrong and trying to avoid this recurring again

[Sriram2009]

Hi Divya.

In BI after restore the connection, your BI releated issues will be fixed, and then start the extraction from the Qas ECC to BI. keep the note that you should have disk space in BI for extraction.

Regards

SS

[Sriram2009]

Hi Divya.

After refreshed the ECC Qas system, you have to restore the connection from BI using the transaction code RSA1 under the source system. before the that you have to reset the password of communication user id in both systems (ECC & BI). one of the post refresh activities.

Regards

SS

[teja_divya]

Thanks for the reply Sri ram. AlsoCould you pelase answer the above questions .