BAPI changing Material Masterdata - EAN type unwillingly modified

Question

Hello everybody!
I want to modify material units of measure with BAPI : BAPI_MATERIAL_MAINTAINDATA_RT
I fill
HEADDATA,
CLIENTDATA,
CLIENTDATAX,
PLANTDATA,
PLANTDATAX,
UNITSOFMEASURE  ,
UNITSOFMEASUREX
tables.
For some articles, the EAN (EAN11) and EAN category (NUMTP) are unwillingly changed, without dump or message.
Those articles look like this:
Before: 2124781000000 (6 nul positions), internal EAN category Z1.
After BAPi: 2124780000000 (7 nul positions), EAN cat : EA
There are 2 units of measure : ST and CAR (CAR = 20 ST for example)
I don't want the EAN to change. I suppose my selection is uncomplete in the BAPI.
I add that it was working fine before our ECC6 upgrade.
Can anyone please help ?
François Leyssenne

Answer 1

It is fixed at last , The problem was I was setting only
listParams.setValue("MATERIAL", "346"); to fetch standard data ( MATERIALVALUATIONDATA ) .
To fetch MATERIALVALUATIONDATA which consist of Standard Price and Currency  we need to set this parameters  also.
listParams.setValue("PLANT", "ZRP3");
listParams.setValue("VALUATIONAREA", "ZRP3");
And you will get the complete MATERIALVALUATIONDATA  data structure then .
|-|------------------------|------------------------|--------|-----|---|
| STRUCTURE 'BAPIMATDOBEW'
|-|------------------------|------------------------|--------|-----|---|
|P|MOVING_PR               |STD_PRICE               |PRICE_UN|CURRE|CUR|
|-|------------------------|------------------------|--------|-----|---|
|0|   1   2   3   4   5   6|   7   8   9   0   1   2|   3   4|56789|012|
|-|------------------------|------------------------|--------|-----|---|
|S|00000000000000000000000C|00000000000000000100000C|00001C00|INR  |INR|
|-|------------------------|------------------------|--------|-----|---|
{PRICE_UNIT=1, PRICE_CTRL=S, CURRENCY_ISO=INR, STD_PRICE=10.0000, MOVING_PR=0.0000, CURRENCY=INR}