LSMW - Logical Path/File - No logical path has been specified

Question

Hello,
I am trying to create a LSMW with the RM06EEI0 direct input program for ME21N transaction.
At the SpecifyFiles step I get the error message "No logical path has been specified".
My dilemmas are:
1. How can I solve this error? Is the FILE transaction only solution? If yes, where and how I must define the logical path/file?
2. Why in the case of the Batch Input Recording LSMW Method this files are created automatically? (I can see them in the AL11 transaction and I didn't define them by myself).
3. Why on other system this error is just an warning message? If you look at this tutorial  http://****************/Tutorials/LSMW/PO/Page4.htm at Step7.g. you can see that there is no need of defining the file/path in FILE transaction.
More info about the system I am working in:
SAP ECC 6.0.
LSMW 4.0.0. Version.
Thank you.
Daniela

Answer 1

Hi
Refer the oss note 753511 released for this kind of error you face in LSMW, I am pasting the content of the note below,
******************Note Content,
Symptom
The system issues an error message for the logical path or file when you perform the "Specify files" step in the Legacy System Migration Workbench (transaction LSMW) although you have made the correct assignment in transaction FILE.
The error messages are as follows:
The logical path <PATH> does not point to the physical directory.
The logical file <FILE> is not assigned to the physical file.
or
A logical path was not specified.
Other terms
Logical path, logical file, transaction FILE, LSM Workbench
Reason and Prerequisites
Some import interfaces that you can also use with transaction LSMW work with logical path and file names.
Transaction LSMW itself, however, works with physical file names. To be able to transfer the LSMW file with the converted data to the import program, you must specify a logical file name for the file with the converted data in addition to the physical file name. In this case, the system displays additional fields in the 'Specify files' step in which you must enter the logical path and file name.
Solution
The error messages may be due to several causes. Check the following:
Have you maintained the logical path and logical file name and have you assigned them to the physical file specified in the "File" input field of transaction LSMW?
These settings are maintained in transaction FILE.
When you use logical file and path names, you must specify the name of the physical file with its path. If you have not specified any directory, you cannot assign any directory to the logical path in transaction FILE. In this case, the system uses the SAP Home directory on the application server by default. Bear in mind that the file name must not exceed the maximum length of 45 characters, including the path.
Up to LSMW version 1.7.2 (*):
If the logical file name specified does not point to the physical file (although it should do), the system adjusts the logical file name, that is, the information in transaction FILE is changed to the entries made in transaction LSMW. This may lead to unwanted side effects if the logical file is also used somewhere else. Therefore, SAP recommend that you always use separate logical paths and file names for transaction LSMW (the problem is corrected as of LSMW version 1.8.0, see below). If the logical file does not exist yet, it will be created upon request.
As of LSMW version 1.8.0 (*):
The settings of the logical file are checked but no longer adjusted automatically as in version 1.7.2 (see above). If there are inconsistencies, the system issues an error message. If the user is authorized to maintain logical paths and file names (as for transaction FILE: "Maintenance authorization for cross-client tables"), transaction LSMW can create the logical path, the file name and the file. Due to this automatic generation, the user no longer needs to make adjustments in transaction FILE. Therefore, we especially recommend this procedure.
To display the version of transaction LSMW, select "Extras" --> "Display LSMW version" in the main menu of the initial screen.
You should also bear in mind that as of Basis Release 6.20, that is, as of LSMW version 4.0, transaction LSMW is no longer an add-on but is delivered with the standard system.
Hope this helps,
Sunil