Error message:
Posting can not be saved as reconciliation account has not been assigned to the vendor account.
Analysis:
During posting of an invoice to a vendor where general ledger account has not been defined in the vendor master data, the above error message occur.
Do note that vendor master data in the SAP system is treated as subsidiary [...]

To provide additional value to article RE Accruals/Deferrals Configuration Guide, here’s the detailed proforma accounting entries for the rental accrual/deferral process for your reference. You may share it with other SAP Consultants/Users.
A. RENTAL EXPENSE
»»»» Deferral of Rental Expense

Dr Prepaid Rental                   xxxx
Cr Rental Expense                                      xxxx
Automatic set-up of prepaid rent

Dr. Rental Expense                      xxxx
Cr. Prepaid Rental                                              xxxx
Auomatic [...]

Real Estate component also uses the Accrual Engine application for accruals/deferrals of revenue and expenses. Here’s a simple guide on how to set-up & activate the accruals/deferrals in RE component.
1. Assign Company Code to RE Application Component
Path: IMG → Flexible Real Estatement Management (RE-FX) → Accounting →  Accrual/Deferral → Basic Settings → Assign Company Codes.
Transaction Code:  SPRO
2. Define Accounting Principle
Path: [...]

Error Message:
Processing not possible on 01/31/2010 - fiscal year 2010 not carried forward
Message No.: ACEPS061
Analysis and Diagnosis:
During periodic processing of accruals/deferrals (RERAALCN) in Flexible RE, the above error message occured. The key date entered is 01/01/2010. See screenshot:

Processing terminated, as date 01/31/2010 in company code 0001 falls in a future fiscal year.
Solution and procedures:
You must [...]

Requirement:
P&L account trading partner field should be automatically populated through the vendor/customer trading partner.
Solution/Requirements:
To populate automatically the trading partner field for P&L account line item, take note and follow these requirements and procedures:
1. Create one Company ID for each of your company code
Path: IMG → Enterprise Structure → Definition → Financial Accounting → Define company.
Transaction Code: OX15

2. Assign the [...]