Import Server problem

Hello,
in the last days we experience some strange phenomena with the Import Server. For example, I created an XML import mapping for the standard repository "Material", created a port in the console and used the mapping there. Manual execution of the mapping worked fine. I dumped the file in the correspondent Ready-folder and the Import Server swallowed the file and progressed it.
So far so good.
I did this again, no problem. I tried a different file and got error messages, because the file format didn't match. But the Import Server still swallowed the file. Then I tried a larger file like the first one (the first one was just a 10-records-test), but no reaction. The Import Server did not swallow the file.
I read this thread: , stopped and started the MDM Server and the Import Server several times and then dumped files again - same result, even with the file with which it worked before.
I created a new mapping on Repository "Vendor" like the one on "Material", for the same file, no reaction. The Import Server seems to be sleeping.
Anyone faced a similar situation before? Any suggestions what I could do to resolve the problem?
Best regards,
Jörg
Message was edited by: Jörg Thiesmann

Some additional information on my problem:
The second file read the following error once for each record I wanted to read:
So there IS only one root element. The test file with which it worked before has exactly the same start/end.
This was the last logfile.
Message was edited by: Jörg Thiesmann

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Note:Please mark the helpful answers.

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Structural Exception thrown during Automatic Import in MDM
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Message was edited by: Alexander Raja
Alexander Raja

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Hi reddy,
Can any one explain difference between import server and import manager and how the data will be imported to the same
Please follow the text below, which has been taken from the help.sap.com
Both MDIS and the MDM Import Manager can import data from a source file into an MDM repository. However, each has unique capabilities that distinguish it from the other. When each is used to its advantage, the result is an import strategy which provides the most efficient importing of data possible.
The strength of the Import Manager is its connection to the source data, which enables its interactive map-making capabilities. When the Import Manager connects to a source it preloads the entire source file, giving it knowledge of every field and every value in the source data. This u201Ctotal awarenessu201D is crucial for preparing a complete import map. To help ensure a map is complete, the Import Manageru2019s Import Status tab alerts users to any discrepancies between source data values and the current map. The user can fix these problems interactively within the Import Manager and save the corrected map before any data is imported.
Preloading an entire source file comes at a price, however. It consumes memory on the computer running the Import Manager and very large source files may exhaust the computeru2019s available memory.
By contrast, MDISu2019s strengths are its scalability and automation.
For scalability, instead of preloading the entire source file into the host machineu2019s memory as the Import Manager does, MDIS processes records in a stream by loading a record at a time into memory.
This streaming technique enables MDIS to process much larger source files than the Import Manager, as the demand for memory on the host machine is not affected by the size of the import file.
In addition to file size, file quantity poses a second scalability challenge. For example, a real-time transactional environment may produce a staggering number of files, each containing only one or two records. To import these files individually through Import Manager would be extremely inefficient. MDIS tackles this problem with a file aggregation feature that processes files systematically in batches rather than as individual files, resulting in faster, more efficient import of data.
As it relates to automation, MDIS requires no user intervention to import files to an MDM repository. Instead, it relies on maps created previously within the Import Manager. Once an import file is placed in the appropriate folder, its data is imported automatically into the MDM repository using the rules of the pre-defined import map. Once a file is processed, MDIS scans the repository for the next file to import. This process continues 24 hours a day, seven days a week, until either MDIS or MDM Server are stopped.
The trade-off for this scalability and automation is that if discrepancies between the source data and the import map arise, MDIS cannot u201Cfixu201D these problems by itself. Instead, the u201Cproblem casesu201D can be fixed manually at a later time using the interactive capabilities of the Import Manager. Unlike the Import Manager, however, MDIS can set aside problem records or files and continue importing.
These conceptual and operational differences between the Import Manager and MDIS are summarized in the table below.
Item
Import Manager
MDIS
Source file location
Anywhere
Automatic inbound port
Import process
Interactive
Automatic
Import map state
Editable
Read-only
Object loaded in memory
Entire import file
Individual records
Streaming import support
No
Yes
File aggregation support
No
Yes
Maximum import file size
Limited (50,000 records)
Unlimited
Status location
Import Status Tab
MDM Console/Report file
Error correction prior to import
Yes
No
Exception handling during import
No
Yes
For additional info, kindly refer the link below:
http://help.sap.com/saphelp_mdm550/helpdata/en/43/12036df94c3e92e10000000a1553f6/frameset.htm
GO to-> MDM import Server
Hope it helps.
Thanks and Regards
Nitin Jain

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