Histórico

Queria um exemplo usando node

Boa tarde, @russofullstack!
Verifiquei aqui e de fato não temos exemplos de split usando a SDK de node, iremos atualizar o repositório para adicionar estes exemplos.
Porém, a SDK ja possui suporte para realizar a comunicação com estes endpoints. Segue os nomes das funções:

pixSplitDetailCharge
pixSplitLinkCharge
pixSplitUnlinkCharge
pixSplitDetailDueCharge
pixSplitLinkDueCharge
pixSplitUnlinkDueCharge
pixSplitConfig
pixSplitConfigId
pixSplitDetailConfig

Qual endpoint você gostaria de ter o exemplo da requisição em node?

vou aguardar esses exemplos na SDK node...

O exemplo de body que você enviou logo acima esta correto. Você testou?

Unhandled Promise Rejection {"errorType":"Runtime.UnhandledPromiseRejection","errorMessage":"TypeError: gerencianet.pixSplitConfigId is not a function","reason":{"errorType":"TypeError","errorMessage":"gerencianet.pixSplitConfigId is not a function","stack":["TypeError: gerencianet.pixSplitConfigId is not a function"," at /var/task/src/index.js:783:15"," at Layer.handle [as handle_request] (/var/task/node_modules/express/lib/router/layer.js:95:5)"," at next (/var/task/node_modules/express/lib/router/route.js:144:13)"," at Route.dispatch (/var/task/node_modules/express/lib/router/route.js:114:3)"," at Layer.handle [as handle_request] (/var/task/node_modules/express/lib/router/layer.js:95:5)"," at /var/task/node_modules/express/lib/router/index.js:284:15"," at Function.process_params (/var/task/node_modules/express/lib/router/index.js:346:12)"," at next (/var/task/node_modules/express/lib/router/index.js:280:10)"," at cors (/var/task/node_modules/cors/lib/index.js:188:7)"," at /var/task/node_modules/cors/lib/index.js:224:17"]},"promise":{},"stack":["Runtime.UnhandledPromiseRejection: TypeError: gerencianet.pixSplitConfigId is not a function"," at process. (file:///var/runtime/index.mjs:1276:17)"," at process.emit (node:events:529:35)"," at emit (node:internal/process/promises:149:20)"," at processPromiseRejections (node:internal/process/promises:283:27)"," at process.processTicksAndRejections (node:internal/process/task_queues:96:32)"]}
Unknown application error occurred