Message type: E = Error
Message class:  TU - Billing/Scheduling/Budget Billing 
Message number: 387
Message text: Settled budget billing items are deleted during a cycle change
Budget billing plan &V1& contains items, which have been cleard due to
an adjustment to changed billing dates (transaction EA65, clearing
reason 22), or an adjustment to a changed transaction currency (report
REEABP_EURO, clearing reason 24).
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
These items are deleted from the budget billing plan, otherwise no cycle
change would be possible. If you want to keep these items, leave the
budget billing plan processing without saving.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message TU387 indicates that settled budget billing items are being deleted during a cycle change. This typically occurs in the context of budget billing processes, where billing items that have already been settled are not supposed to be altered or deleted during a cycle change.
Cause: The error can arise due to several reasons: Cycle Change Configuration: The configuration for the billing cycle may not be set up correctly, leading to attempts to delete settled items. Data Integrity Issues: There may be inconsistencies in the data, such as incorrect references or missing information that causes the system to attempt to delete settled items. User Actions: A user may inadvertently trigger a process that attempts to modify or delete settled items during a cycle change.
Solution: To resolve the TU387 error, consider the following steps: Review Configuration: Check the configuration settings for budget billing cycles in the SAP system. Ensure that the settings do not allow for
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