Internal bug detected: Fee needed > fee paid #32683

1. 
   Fuzion24 commented at 1:01 pm on June 5, 2025: none

   Is there an existing issue for this?

   • I have searched the existing issues

   Current behaviour

   walletcreatefundedpsbt errors out

   0 walletcreatefundedpsbt "[]" '{"<readacted_addr>":0.01}'
   1error code: -4
   2error message:
   3Internal bug detected: Fee needed > fee paid
   4./wallet/spend.cpp:1320 (CreateTransactionInternal)
   5Bitcoin Core v29.0.0
   6Please report this issue here: https://github.com/bitcoin/bitcoin/issues
   

   Expected behaviour

   walletcreatefundedpsbt should not error out.

   Steps to reproduce

   Create a watch only wallet Import a P2SH publickey Try to create an unsigned TX using the TXOs of the descriptor

   Relevant log output

   No response

   How did you obtain Bitcoin Core

   Compiled from source

   What version of Bitcoin Core are you using?

   Bitcoin Core daemon version v29.0.0

   Operating system and version

   Ubuntu 22.04 LTS

   Machine specifications

   No response

2. fanquake added the label Wallet on Jun 5, 2025
3. 
   Fuzion24 commented at 4:46 pm on June 5, 2025: none

   I had previously tried with an explicit feeRate, but here’s exactly your example and it’s output:

   0walletcreatefundedpsbt "[]" '{"<redacted address>":0.1}' 0 '{"feeRate":0.0001}'
   1error code: -4
   2error message:
   3Internal bug detected: Fee needed > fee paid
   4./wallet/spend.cpp:1320 (CreateTransactionInternal)
   5Bitcoin Core v29.0.0
   6Please report this issue here: https://github.com/bitcoin/bitcoin/issues
   

4. 
   maflcko commented at 4:54 pm on June 5, 2025: member

   @Muniru0 Please do not post LLM generated blobs blindly. As can be seen, this isn’t helpful.

   Similar report: #29398 @Fuzion24 It would be helpful if the issue could be reproduced step-by-step on a freshly created regtest testing wallet.

5. 
   Muniru0 commented at 5:36 pm on June 5, 2025: none

   @Muniru0 Please do not post LLM generated blobs blindly. As can be seen, this isn’t helpful.

   Similar report: #29398

   @Fuzion24 It would be helpful if the issue could be reproduced step-by-step on a freshly created regtest testing wallet.

   Thanks a lot @maflcko. I can that in good faith. I had an idea and used an LLM to try to make it more professional I guess that was my bad. I will try to reproduce the error using the guidelines. I will research thoroughly about this using #29398.

6. 
   achow101 commented at 6:39 pm on June 5, 2025: member

   Import a P2SH publickey

   Can you be more specific as to what you imported? P2SH is, by definition, more than just a public key nor do P2SH scripts necessarily have to have a public key.

7. bitcoin deleted a comment on Jun 5, 2025
8. 
   achow101 commented at 5:43 pm on June 10, 2025: member

   Should you be allowed to create a transaction on a watch only wallet?

   Yes, that’s pretty much the point of a watch-only wallet: to create unsigned transactions that the offline wallet can sign.

Contributors
Fuzion24 maflcko Muniru0 achow101

Labels
Wallet