Message type: E = Error
Message class:  FAGL_SWITCH_LEAD_LDG - Technical Changeover of Leading View in General Ledger (New) 
Message number: 119
Message text: Period start &1 in variant &2 differs from &3 variant &4
The period definition of the ledgers to be switched must match during
the course of the switch project.
The project cannot be activated or continued with the existing
parameters.
Make sure that the defined posting periods for the ledgers to be
switched are the same during the switch. Use shortened fiscal years for
this if necessary. For more information, see SAP Library under <LS>
General Ledger Accounting (FI-GL) </>-> <LS>Configuring General Ledger
Accounting </>-> <LS>Parallel Accounting </>-> <LS>Portrayal Using
Parallel Ledgers </>-> <LS>Change in Leading Valuation </>-> <LS>
Preparation Phase </>-> <LS>Check Prerequisites for Project Start</>.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message FAGL_SWITCH_LEAD_LDG119 typically occurs in the context of financial accounting, particularly when dealing with the leading ledger and non-leading ledgers in the General Ledger (G/L) accounting. This error indicates that there is a mismatch in the period start settings between two variants for the same ledger.
Cause: The error message FAGL_SWITCH_LEAD_LDG119 is triggered when: The period start date defined in one variant does not match the period start date defined in another variant for the same ledger. This can happen when you have different settings for the leading ledger and a non-leading ledger, or if there are inconsistencies in the configuration of the variants used for financial reporting.
Solution: To resolve this error, you can follow these steps: Check the Variants: Go to the transaction code OB52 (Maintain Fiscal Year Variant) or OB29 (Define Variants for G/L Account Balances). Review the variants mentioned in the error message (variant &2 and variant &4). Ensure that the period start
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