How To Fix E7064 - Entry in "ND" field (device alloc. not poss.) changed in billing period

E7064 - Overview

• Message type: E = Error

• Message class: E7 - IS-U master data

• Message number: 064

• Message text: Entry in "ND" field (device alloc. not poss.) changed in billing period

What causes this issue?

You cannot bill an installation if the <LS>ND</> indicator (device
allocation is not possible) changes within a billing period.
In the current installation, the value was changed after the start of
the current billing period.

System Response

You cannot save the installation with its current status.

How to fix this error?

Correct the entry in the <LS>ND</> indicator (device allocation is not
possible) to the same value for all modifiable time slices.

Error message extract from SAP system. Copyright SAP SE.

E7064 - Details

• The SAP error message E7064, which states "Entry in 'ND' field (device allocation not possible) changed in billing period," typically occurs in the context of device management and billing processes within SAP IS-U (Industry Solution for Utilities). This error indicates that there is an inconsistency or conflict regarding the allocation of a device (like a meter) during a billing period.
  
  Cause:
  
  Device Allocation Changes: The error usually arises when there are changes made to the device allocation (ND field) during an active billing period. This could happen if a device is reallocated, replaced, or if there are changes in the master data that affect the billing process.
  Billing Period Restrictions: SAP has certain restrictions in place to prevent changes to device allocations during an ongoing billing period to ensure data integrity and accurate billing.
  Data Inconsistencies: There may be inconsistencies in the data related to the device, such as incorrect or missing entries in