Comprehensive and Detailed 150 to 250 words of Explanation From Workday Record-to-Report/Course Guide/topics:

The new ledger account must be assigned as the default result of the Intercompany Payables account posting rule. Account posting rules are the policy layer Workday uses to derive ledger accounts for system-generated operational and balancing lines. By setting the new account as the rule's default, all intercompany payable lines are directed there unless a more specific condition intentionally produces another account.

Merely creating the ledger account does not cause Workday to use it. End users do not normally select the intercompany payable control account manually on each transaction because that would weaken consistency and reconciliation. A custom validation condition on Accounting Journals can check transaction data, but it does not replace the account derivation rule. Similarly, creating a generic condition rule for Intercompany without attaching it to the applicable account posting rule does not determine the journal result. Administrators should confirm that the new account belongs to the company's account set, supports the required currency and worktag behavior, and is included in appropriate ledger-account summaries. The corresponding Intercompany Receivables rule must remain separately configured for due-from balances. Assigning the new account to the Intercompany Payables posting rule is therefore the controlled and scalable configuration.

Official Workday reference: Workday - Setup Considerations: Direct Intercompany Activities ; topics: intercompany payables account posting rule and default ledger account.

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