First, you must have fielddelimiters in the source !
As RCDDLM you can use *ALL, because if the combination *CRLF is not found, this error occurs. Perhaps you have only *CR or *LF or *LFCR as RCDDLM.

The solution above is, that the destination file contains only 1 field so you can't use CPYFRMIMPF and must use CPYFRMSTMF.