Unknown data block tags in the program

Hello,

I uploaded machine program by simatic manager software

In the attached picture 1

Why this tag in the cross-reference table appears in this form (DB?.DBX1.0) ?

What is the meaning of the question mark in the datablock address tag??

In the attached picture 2

I did not found  the selected tag (DB1.DBX0.1) in the cross reference table or in the (GO TO LOCATION ) menu as attached picture no 3

I need to know the location of this tag (DB1.DBX0.1)?  Which functions block used this tag(DB1.DBX0.1)  ??

I try to make compile , but it give alarm message

( constant format for data type BYTE does not fit the normal type pointer of the formal parameter IN0

76: OB122 (STL) )

Closed cause question posted twice.

The second thread with the subject Did not find tag in the program is published within the conference STEP 7 / STEP 7 Lite.