CRCPC2181E
The "{0}" {0,keyword,product} cannot added as a child of any version of itself.

Explanation

A {0,keyword,product} cannot be added as a child of any version of the same {0,keyword,product}. For example you cannot add the "example-1" {0,keyword,product} as a child of the "example-2" {0,keyword,product}.
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