Error 0x80073B32

Value: -2147009742 | 0x80073B32 | 2147957554

What does it mean ?

ERROR_PRI_MERGE_MULTIPLE_MAIN_PACKAGES_NOT_ALLOWED  
Packages for a PRI file merge must not include multiple main packages.
Value: 15154 | 0x3B32 | 0b0011101100110010

Where does it come from ?

FACILITY_WIN32  
Provides a way to handle error codes from functions in the Win32 API as an HRESULT. (Error codes in 16 - bit OLE that duplicated Win32 error codes have also been changed to FACILITY_WIN32)
Value: 7 | 0x007 | 0b00000111

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