3437464 - Transport control program tp fails with return code: 259

While trying to add an external transport request in the import queue and getting the below error.

TP output:

This is tp version 381.571.23 (release 789, unicode enabled)
Utf8nToUcnOverlap_2 failed with returncode 512. memory to be converted:
000000332054303030353032303632363230323031323135313930343435756e6b6e6f776e202020202037353020000010014c000008082ed296a800400000121f9
d026ddf6a76db469270ef654f7bd8ddcb606e7d9a2482ed69d2142d6b91055a64cb6244911a764bb675111c5b9315904881a5241860817d9dc53cc03cc33cc13ccc9
ca6488ab6baf9238a91b281bc55b02591f5b18bcd62f5d7cd2242a8866bc1e9f2fe66b6c01f27f78be97cd6c4faf989a69d680d7c8c75d2d41a4d4d4308fd07d7f8f
cc3fded04f39f16cbc93bfc12bf
ERROR: Utf8nToUcnOverlap_2 failed with returncode 512. memory to be converted:
000000332054303030353032303632363230323031323135313930343435756e6b6e6f776e202020202037353020000010014c000008082ed296a800400000121f9
d026ddf6a76db469270ef654f7bd8ddcb606e7d9a2482ed69d2142d6b91055a64cb6244911a764bb675111c5b9315904881a5241860817d9dc53cc03cc33cc13ccc9
ca6488ab6baf9238a91b281bc55b02591f5b18bcd62f5d7cd2242a8866bc1e9f2fe66b6c01f27f78be97cd6c4faf989a69d680d7c8c75d2d41a4d4d4308fd07d7f8f
cc3fded04f39f16cbc93bfc12bf
 
tp returncode summary:
 
TOOLS: Highest return code of single steps was: 0
ERRORS: Highest tp internal error was: 0259
tp finished with return code: 259
meaning:
  Codepage conversion failed.

• SAP Netweaver,SAP S/4 HANA

tp finished with return code: 259,Utf8nT,oUcnOverlap_2 failed with returncode 512,  Codepage conversion failed , KBA , BC-CTS-TLS , Transport Tools , Problem