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Editorial Team
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Asked: 2026-06-01T07:18:54+00:00

I am using the TcmUploadAssembly utility in a post-build event but am receiving the

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I am using the TcmUploadAssembly utility in a post-build event but am receiving the following error from the tool.

Error 1 Name must be unique for items of type: Template Building Block
within this Folder and its BluePrint context. Source or sources of
conflict:
tcm:5-200-2048. C:\Projects\Project1\src\Tridion\TBBs\EXEC Compound
Templates

The TcmId given refers to the Assembly stored in Tridion which I would expect because that is what I am overwriting. In the past this “just worked”. Am I missing something?

Notes:

  1. My user is an admin
  2. The Tridion instance is on my network so I am using credentials in context.
  3. I have specified all settings via the command line (no config.xml is used)

Any ideas?

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1 Answer

  1. Editorial Team

    I would say check your Blueprint context (i.e. the Publication you are in). This error means you are trying to create the TBB, yet there is already an item with the same name probably somewhere down in the Blueprint child Publications.

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