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Issues importing descriptors in Core regtest wallet

ok using in regtest with my bitcoin core, i am trying to import the below descriptor and its corresponding arguments for the importdescriptors command but i am unsuccessful. i've tried a few different variations and still the same issue.

bitcoin-cli-rt -rpcwallet="my-descriptor-wallet" importdescriptors << 'EOF'
[
  {
    "desc": "tr([9a3ad634/86'/1'/0']tpubDCAqxEgJB2o9ZL4gozDZ5xmRGYFzV7oJB1hC1hSDYqXyoFYNEvbHh7smPmhDPsozfusb4czadKiC5HQ4e231rY9o9Q6tN34nrruJcF6rPYB/0/*,{multi_a(2,[8e7dc54e/86'/1'/0']tpubDDGyiLE11EYR9sNLNqExhwASubctpctXt5S5kfHepuL4UtihdkvKuHvakCR6od6yusSCruZ3HnejrgEvechahX3PjNQr87WPwMrUHM1J7CM/0/*,[32bbb15e/86'/1'/0']tpubDCwvzUy66wLsmQ7GzB1Tzem7xL9JWCtAYj3z2ubqFyRebgvbwtSXNxyzSHNs2zCNWuUHe8QpnMqNsvQcXYRyaxYZaNtNQLX4MgohApjsTs3/0/*,[c556a9ec/86'/1'/0']tpubDCJTFn83QPCEVG8i7ZpChtYsykvU6U2g8QJTHhJQ3xQbLwDiEg1DSFtRV25FaJkpwxLbCA91iB8AZrxJmh13XBbpPuk64bcYWVsm4xLBnZL/0/*),and_v(v:sha256(4b58001763231587a62a9eaa3e94fd639780bfa0467b272292646bd8c8dad403),and_v(v:pk([8e7dc54e/86'/1'/0']tpubDDGyiLE11EYR9sNLNqExhwASubctpctXt5S5kfHepuL4UtihdkvKuHvakCR6od6yusSCruZ3HnejrgEvechahX3PjNQr87WPwMrUHM1J7CM/1/*),older(144)))})#qd05lhaq",
    "timestamp": "now",
    "range": 100,
    "next_index": 0
  }
]
EOF

The error is always just:

error code: -1
error message:
importdescriptors requests

Import descriptors. This will trigger a rescan of the blockchain based on the earliest timestamp of all descriptors being imported. Requires a new wallet backup.
When importing descriptors with multipath key expressions, if the multipath specifier contains exactly two elements, the descriptor produced from the second element will be imported as an internal descriptor.

Note: This call can take over an hour to complete if using an early timestamp; during that time, other rpc calls
may report that the imported keys, addresses or scripts exist but related transactions are still missing.
The rescan is significantly faster if block filters are available (using startup option "-blockfilterindex=1").

I'm not sure if the issue lies in the descriptor itself or the command arguments. And i'm not sure what to make of that error message.

The above descriptor was generated from the below compiled miniscript:

"t:or_c(pk([9a3ad634/86'/1'/0']tpubDCAqxEgJB2o9ZL4gozDZ5xmRGYFzV7oJB1hC1hSDYqXyoFYNEvbHh7smPmhDPsozfusb4czadKiC5HQ4e231rY9o9Q6tN34nrruJcF6rPYB/0/*),or_c(multi_a(2,[8e7dc54e/86'/1'/0']tpubDDGyiLE11EYR9sNLNqExhwASubctpctXt5S5kfHepuL4UtihdkvKuHvakCR6od6yusSCruZ3HnejrgEvechahX3PjNQr87WPwMrUHM1J7CM/0/*,[32bbb15e/86'/1'/0']tpubDCwvzUy66wLsmQ7GzB1Tzem7xL9JWCtAYj3z2ubqFyRebgvbwtSXNxyzSHNs2zCNWuUHe8QpnMqNsvQcXYRyaxYZaNtNQLX4MgohApjsTs3/0/*,[c556a9ec/86'/1'/0']tpubDCJTFn83QPCEVG8i7ZpChtYsykvU6U2g8QJTHhJQ3xQbLwDiEg1DSFtRV25FaJkpwxLbCA91iB8AZrxJmh13XBbpPuk64bcYWVsm4xLBnZL/0/*),v:and_v(v:sha256(4b58001763231587a62a9eaa3e94fd639780bfa0467b272292646bd8c8dad403),and_v(v:pkh([8e7dc54e/86'/1'/0']tpubDDGyiLE11EYR9sNLNqExhwASubctpctXt5S5kfHepuL4UtihdkvKuHvakCR6od6yusSCruZ3HnejrgEvechahX3PjNQr87WPwMrUHM1J7CM/1/*),older(144)))))"

I just want to verify that my descriptor can be imported into my Core wallet successfully and that it can generate addresses from that descriptor.



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