Faced with the new issue when transferring NFT:
b'{"error":"error code: 0 , message: cannot apply external message to current state : External message was not accepted\\nCannot run message on account: inbound external message rejected by account FFDF... before smart-contract execution"}\n'

Anyone familar with it?

Probably it's because of not enough gas on my balance. But maybe someone has a list of known errors with tonapi RPC?

When I deposited 1 $TON, the error was changed to:

b'{"error":"error code: 0 , message: cannot apply external message to current state : External message was not accepted\\nCannot run message on account: inbound external message rejected by transaction FFDFASDASDASDSADASD:\\nexitcode=33, steps=23, gas_used=0\\nVM Log (truncated):\\n...te NOW\\nexecute LEQ\\nexecute THROWIF 36\\nexecute PUSH c4\\nexecute CTOS\\nexecute LDU 32\\nexecute LDU 32\\nexecute LDU 256\\nexecute LDDICT\\nexecute ENDS\\nexecute XCPU s4,s3\\nexecute EQUAL\\nexecute THROWIFNOT 33\\ndefault exception handler, terminating vm with exit code 33\\n"}\n'

Check your seqno

Yes, it helped. Do you know send/boc should return tx hash or something? I received "" from tonapi

Sorry, I didn't work much with tonapi so can't help with that

Question:
How to decode transaction data and msg_data?