Steps to reproduce on regtest:

```
converttopsbt 02000000000101ab73dba46508bacdb49a988ddd74bc9d39c9cb7e057af060ca8c6b6861e28e3c0300000000feffffff02b828d0b20000000017a914d1954862afd728fbb055149002958e1d1b9e1f0b8700ca9a3b0000000017a91442170ccb3441cff1723af9afab6f2553103e1d578702473044022077380c6e16496d9905aef120694c329be51522847cb5d53fa74b94698c95678d02202d32c46e0e17420a83dee830fefda7d40529182f5d82be47c2b49a7b83214ab50121026d483d6628dcc3ef6e3ab9ed4937c452c263c7e0ac80eb4be97426d5da8f640500000000
```
or 
```
converttopsbt 02000000000101ab73dba46508bacdb49a988ddd74bc9d39c9cb7e057af060ca8c6b6861e28e3c0300000000feffffff02b828d0b20000000017a914d1954862afd728fbb055149002958e1d1b9e1f0b8700ca9a3b0000000017a91442170ccb3441cff1723af9afab6f2553103e1d578702473044022077380c6e16496d9905aef120694c329be51522847cb5d53fa74b94698c95678d02202d32c46e0e17420a83dee830fefda7d40529182f5d82be47c2b49a7b83214ab50121026d483d6628dcc3ef6e3ab9ed4937c452c263c7e0ac80eb4be97426d5da8f640500000000 false
```

Further reading: #13738
UniValue importmulti(const JSONRPCRequest& request);
static const CRPCCommand commands[] =
{ 
    
    { "rawtransactions",    "fundrawtransaction",               &fundrawtransaction,            {"hexstring","options","iswitness"} },
    { "wallet",             "abandontransaction",               &abandontransaction,            {"txid"} },
    { "wallet",             "abortrescan",                      &abortrescan,                   {} },
    { "wallet",             "addmultisigaddress",               &addmultisigaddress,            {"nrequired","keys","label","address_type"} },
    { "wallet",             "backupwallet",                     &backupwallet,                  {"destination"} },
    { "wallet",             "bumpfee",                          &bumpfee,                       {"txid", "options"} },
    { "wallet",             "createwallet",                     &createwallet,                  {"wallet_name", "disable_private_keys", "blank"} },
    { "wallet",             "dumpprivkey",                      &dumpprivkey,                   {"address"}  },
    { "wallet",             "dumpwallet",                       &dumpwallet,                    {"filename"} },
    { "wallet",             "encryptwallet",                    &encryptwallet,                 {"passphrase"} },
    { "wallet",             "getaddressesbylabel",              &getaddressesbylabel,           {"label"} },
    { "wallet",             "getaddressinfo",                   &getaddressinfo,                {"address"} },
    { "wallet",             "getbalance",                       &getbalance,                    {"dummy","minconf","include_watchonly"} },
    { "wallet",             "getnewaddress",                    &getnewaddress,                 {"label","address_type"} },
    { "wallet",             "getrawchangeaddress",              &getrawchangeaddress,           {"address_type"} },
    { "wallet",             "getreceivedbyaddress",             &getreceivedbyaddress,          {"address","minconf"} },
    { "wallet",             "getreceivedbylabel",               &getreceivedbylabel,            {"label","minconf"} },
    { "wallet",             "gettransaction",                   &gettransaction,                {"txid","include_watchonly"} },
    { "wallet",             "getunconfirmedbalance",            &getunconfirmedbalance,         {} },
    { "wallet",             "getwalletinfo",                    &getwalletinfo,                 {} },
    { "wallet",             "importaddress",                    &importaddress,                 {"address","label","rescan","p2sh"} },
    { "wallet",             "importmulti",                      &importmulti,                   {"requests","options"} },
    { "wallet",             "importprivkey",                    &importprivkey,                 {"privkey","label","rescan"} },
    { "wallet",             "importprunedfunds",                &importprunedfunds,             {"rawtransaction","txoutproof"} },
    { "wallet",             "importpubkey",                     &importpubkey,                  {"pubkey","label","rescan"} },
    { "wallet",             "importwallet",                     &importwallet,                  {"filename"} },