2802958 - How to substitute custom fields on cloud systems

This KBA explains how to substitute custom fields on cloud systems

SAP S/4HANA Cloud Public Edition

Possible solutions for updating custom fields:

• Manage Substitution/Validation Rules
  
  Rules for Substitution/Validation 

The app Manage Substitution/Validation Rules - Journal Entries (App ID F4406)  allows to define substitution rules for custom fields using a simple Fiori UI and write data into both Entry View (BSEG) and Ledger View (ACDOCA).

• BAdIs for Substitution for Journal Entries

        FIN_ACDOC_ITEM_SUBSTITUTION - Journal Entry Item Substitution

       The implementation will update Entry View (BSEG) and Ledger View (ACDOCA).

        FIN_ACDOC_EXT* BAdIs:
        FIN_ACDOC_EXT_SUBSTITUTION - Journal Entry Item Extension Fields Substitution
        FIN_ACDOC_EXT_REV_SUBSTITUTION - Journal Entry Item Extension Fields Substitution For Reverse
        FIN_ACDOC_EXT_CHG_SUBSTITUTION - Journal Entry Item Extension Fields Substitution For Change

        Implementation of these 3 BAdis will only update the Ledger View (ACDOCA).

How to extend a custom field and derive the value using the Manage Substitution/Validation Rules app?

3448139 - Manage Journal Entries Extensibility

2453614 - FAQ: Universal Journal Extensibility

Extending the Form Template with Custom Fields

2462725 - FAQ: Validation and Substitution for Journal Entries in S/4 HANA Cloud

3462236 - Why the value be cleared after published Journal Entry Item Substitution?

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