Internal/External
Internal

Area
Other

Context
When providing plutus cost models as an input to cardano-cli:

• as a map
  • excess parameters are ignored, only existing parameters are checked.
  • If the existing parameters are missing, the parsing fails and the error is reported.
• as a list
  • lists longer than expected are consumed up to the number of existing parameters - excess parameters are ignored.
  • If the list of cost model parameters is too short, the missing parameters are defaulted to maxBound :: Int64 and no error is reported.

Description
When an user provides a cost model containing too many or not enough parameters, cardano-cli should fail with an appropriate message.

Additional info
The original issue:

• PlutusV3 cost model update with 299 items stripped to 251 #924 (comment)

The v2 cost models included in Alonzo Genesis validation and conversion was implemented in

• Fix reading of Plutus V2 cost models with different lengths in AlonzoGenesis in different eras cardano-api#564 - parts of the logic potentially can be reused for this as well.