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READ_TEXT function module behavior

Hello,

I understand that this question has been put up here many times, I also found out that the answer has been given by many experts here, but nevertheless, I would like to put it up now for further clarification.

The issue I am facing:

One of the Z programs we use internally makes use of the standard FM READ_TEXT, and we see that for certain " text lines" which we pass, the READ_TEXT function module indeed 'reads' the lines and populated the table as expected.

But, on the other hand, for certain lines - we also notice that these lines are NOT READ by this function module even though the data has been entered/ they are stored in STXL table.

Is there a constraint on the minimum number of characters/ or a constraint on the lines which this FM expects? ( Please refer this thread

http://scn.sap.com/thread/1469855 )

Is it an unusual behavior observed by everyone/ or do we find this behavior in some SAP document which I can refer?

I would really appreciate some pointers on this issue.

Thanks!

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