strange behaviour with Message mapping

Hi, all.

I have designed simple message mapping:

Source Message

mt_1

-field1 ...... 1--1

-

subfield2 .... 1..1

-

subfield3 ..... 0..1

-field4...... 0..1

Target Message

Z_TEST (imported RFC function description)

-field1 string.......0..1.....

-ID string.......0..1

So mapping looks like that:

mt_test/field1/subfield2 -> Z_TEST/field1

mt_test/field4 -> Z_TEST/ID

When I test this mapping manually (enter values in test XML instance) mapping works properly.

But when i load XML-instance from XML file after mapping target tag Z_TEST/field1 is not produced however tag Z_TEST/ID is produced properly.

Where am I incorrect?

Best regards.