=== Reason: no function clause matching smpp:b2a(<<"message_payload">>) (d:/K2/smpp_parser_idea/smpp_parser/_build/test/lib/smpp_parser/src/smpp.erl, line 400)
in function smpp:'-json2internal/1-fun-1-'/3 (d:/K2/smpp_parser_idea/smpp_parser/_build/test/lib/smpp_parser/src/smpp.erl, line 13)
in call from lists:foldl/3 (lists.erl, line 1263)
in call from smpp:encode/1 (d:/K2/smpp_parser_idea/smpp_parser/_build/test/lib/smpp_parser/src/smpp.erl, line 165)
in call from smpp_test_utils:encode_decode/1 (d:/K2/smpp_parser_idea/smpp_parser/_build/test/lib/smpp_parser/test/src/smpp_test_utils.erl, line 47)
in call from compacted_replace_sm_SUITE:test_compacted/1 (d:/K2/smpp_parser_idea/smpp_parser/_build/test/lib/smpp_parser/test/generated/ct/compacted_replace_sm_SUITE.erl, line 49)
in call from test_server:ts_tc/3 (test_server.erl, line 1546)
in call from test_server:run_test_case_eval1/6 (test_server.erl, line 1062)
Example: