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STEP 7 / STEP 7 Lite: Identifier (null) Is Unable To be used Including bit address Within P# Recurring

Hello,
I had used 'Compile All' function. Right click Blocks folder-Select Check block consistency-Compile All' in my step7 project.
There are few error message.
DB126
Compiler information: compiler error occurred.
Identifier (null) cannot be used with bit address in P# constant
The S7 program still contains the following uncompiled blocks:
DB126

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