9018 Restore/Copy detected invalid Algorithmic Compression/Decompression UDF: %VSTR.
This error is generated if the system determines that the Algorithmic Compression/Decompression UDF specified in the table archive does not match the current system info. VSTR will give the name of the UDF.
Support Representative/System Administrator.
Contact software support and explain the scenario. Most likely the UDF does not exist on the target system. Table in the archive is not usable and will not be restored unless the original UDF definition can be created.