Looking at the error message showing the type name with the "ALM_" prefix, my guess is that your system is configured without the prefix (so your type is "Requirement Document") and you're doing an import with a default gateway mapping that specifies the prefix.
If that's the case, you have to edit/create your own mapping and remove "ALM_".
On the server, the mappings are under "...\data\gateway\mappings", on the client, under "...\config\gateway\mappings", where "..." indicates the server or client root directory.
Then, one directory above, there's the file "gateway-tool-configuration.xml" that puts them together with the parsers.
I know, a major headache! I hope you have someone to help you.
