3073985 - Service Content Update (SCU) fails with "An error occurred while parsing the zip file downloaded from Parcelbox"

You are intending to update your Service Content (SCU) using one of the two ways lined out below. However the update fails with the documented (or similar) errors:

• Background job "SM:SERVICE CONTENT UPDATE" fails with the following job log entries ...

"...
An error occurred while parsing the zip file downloaded from Parcelbox.
Internal session terminated with a runtime error RAISE_EXCEPTION (see ST22)
Job cancelled"

• The related ABAP DUMP as of transaction ST22 ...

Category ABAP Programming Error
Runtime Errors RAISE_EXCEPTION
ABAP Program CL_AGS_SCU_PARCELBOX_HANDLER==CP
Application Component SV-SMG-SER

Short Text
Exception condition "ZIP_DECOMPRESSION_ERROR" triggered

Error analysis
A RAISE statement in program "CL_ABAP_ZIP===================CP" has raised

exception condition "ZIP_DECOMPRESSION_ERROR".
Since the exception was not caught by a program higher up in the call
hierarchy, processing was terminated.

• Transaction AGS_UPDATE, "Step 2: Download Service Content Updates" fails with the following system message ...

"An error occurred while parsing the zip file downloaded from Parcelbox.
Message No. AGS_DSWP_INFRA038"

The ICM log/trace as of transaction SMICM shows related entries, such as below:

"*** ERROR => HttpClntHdlResponse: client: premature EOS (400175/91421533) - wrong content length in response header? [htt..."

SAP Solution Manager 7.2

KBA , SV-SMG-SVD-SCU , Service Content Update , Problem