How To Fix WRF_APC231 - Unable to read dates from previous scheduling, invalid dateline

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_APC - Messages for Operational Assortment Planning and Control

• Message number: 231

• Message text: Unable to read dates from previous scheduling, invalid dateline

What causes this issue?

The reference passed is invalid. No corresponding entry could be found
in the database or the buffer.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

If the item can be changed, choose the <LS>Item Data</> tab page in the
detail view. There you can delete the reference to allow for new
scheduling.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.