update_weight_matrix

Update the collateral weight matrix on a loan.

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Required conditions

The vault integration ACL must enable this integration before the instruction is accepted; that enablement is defined on the GLAM state account.
If the signer is not the owner, the delegate ACL on the GLAM state must contain the exact protocol permission required by this instruction; registering a delegate alone is insufficient.
Instruction-specific destination accounts must satisfy the external protocol's own account model; GLAM validates the accounts it needs for authorization and policy enforcement, then passes the remaining protocol accounts through CPI.
Configuration changes must pass owner or authorized-manager checks and, when the state or mint timelock is active, must follow the propose/apply timing model instead of taking effect immediately.
The instruction metadata names ManageLoan as the delegate permission for this instruction.

Accounts

Account	Role	Description
glam_state	writable	GLAM state account that stores vault configuration, integration ACLs, delegate permissions, policies, assets, mint linkage, and pricing records.
glam_vault	writable	Vault PDA associated with the GLAM state and used as the vault authority.
glam_signer	signer, writable	Calling authority or fee payer.
integration_authority	read-only	Program-derived authority used by the integration for downstream invocation.
cpi_program	read-only	Downstream program invoked by this instruction.
glam_protocol_program	read-only	GLAM Protocol program account used for authorization or CPI.
system_program	read-only	Solana System Program.
bs_auth	signer	bs auth account read by Loopscale Integration Staging's update weight matrix instruction.
loan	writable	Loopscale loan account.

Arguments

Argument	Type	Notes
params	UpdateWeightMatrixParams

Policy & permissions

Enable the Loopscale integration program on the vault integration ACL before Loopscale position actions.
Delegate permission: ManageLoan.

TypeScript SDK usage

const updateWeightMatrixIx =
  await glamClient.loopscale.txBuilder.updateWeightMatrixIx(
    { collateralIndex, weightMatrix, expectedLoanValues, assetIndexGuidance },
    { loan },
  );